arrHitInfo=new Array("00pm,12,1","01462,1,1,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,1,10,1,11,1,12,1,13,1,14,1,15,1,16,1,17,1,18,1","02,12,1","064,13,1","10,13,2","100,1,1,9,1,13,2,17,1","1000,12,1","10000,12,1","10600,13,2","1064,13,2","193,13,2","1d,5,1,6,1,12,1","1x10,13,1","248,13,2","2d,1,2,5,1,6,2,12,1","300mm,12,1","337,13,2","360,7,1,12,1","39,2,1,13,7","3d,1,1","450,8,1","488,13,2","500,13,2","514,13,2","543,13,2","570,13,2","5mm,8,1","630,13,2","633,13,2","650,13,2","680,13,2","694,13,4","6g,13,3","816623,1,1,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,1,10,1,11,1,12,1,13,1,14,1,15,1,16,1,17,1,18,1","âŁ25,12,1","â·,13,20","”,9,1","“,9,1","a1,12,1","ability,1,1,6,2,7,1","able,4,1,12,2","abs,4,1","absorbed,13,1","absorbing,13,1","absorbs,13,1","absorption,13,1","accommodated,5,1,12,1","accuracy,1,2,12,1","accurate,5,1","achieve,1,1,2,1","achieved,12,1","acronym,13,1","acrylic,4,1","action,13,1,14,1,15,1","actually,1,1,13,2","added,5,1,11,1","adobe,12,1","advanced,1,1","advantages,10,1,12,4","advertising,7,4","aerospace,1,13,2,12,3,12,4,12,5,14,6,12,7,12,8,12,9,12,10,12,11,12,12,13,13,12,14,12,15,12,16,12,17,12,18,4","agree,17,1","aim,1,1","aircraft,12,1","alexa,17,1","alignment,13,1","allow,1,1,5,1,8,1","allowing,8,1,12,1","allows,7,1,8,1,12,1","almost,1,2,12,1","along,12,1","already,12,1","alsh,17,1","although,13,2","aluminium,1,9,2,8,3,8,4,8,5,8,6,8,7,8,8,8,9,8,10,8,11,8,12,8,13,8,14,9,15,8,16,8,17,8,18,4","aluminum,13,1","amazing,13,1","among,7,1,12,1","amount,13,3","amp,1,7,3,2,4,1,5,2,6,1,7,2,9,1,10,1,12,15,15,1,17,2","amplification,13,1","animals,12,1","anodise,14,1","anodised,14,1","another,13,1","answered,12,1","anything,1,1,12,2,13,1","applications,1,1,5,1,6,1","applied,13,1","applies,13,2","apply,12,1,13,2","area,1,1,6,1,7,1,8,1,18,1","areas,3,1,13,2","argon,13,7","arial,12,1","around,1,2,7,2,8,1,12,7,13,1","arrange,12,3","arranged,13,1","arrays,13,1","art,1,1,7,1","article,13,2","artistic,12,1","artwork,7,1,12,7","aser,17,1","asked,12,1","atom,13,14","atomic,13,1","atoms,13,24","attachment,1,1","automotive,1,12,2,12,3,12,4,12,5,12,6,12,7,12,8,12,9,12,10,12,11,12,12,12,13,12,14,12,15,12,16,12,17,12,18,4","available,7,1","aversion,13,2","avi,19,8","awards,3,1,7,1,12,1","away,13,1","axis,2,1,13,1","backlit,1,1","backs,12,1","backwards,12,1","bands,12,1","bar,1,1,6,1","barcodes,6,1,12,1","base,4,1,14,1","based,1,9,2,4,3,4,4,4,5,4,6,4,7,4,8,8,9,8,10,4,11,8,12,9,13,6,14,4,15,4,16,4,17,5","bases,12,1","basic,13,1","basically,6,1,12,1,13,2,17,1","basics,13,1","basis,4,1","beam,1,3,12,1,13,5","because,1,1,3,1,5,2,12,1,13,2","become,12,1","bed,3,1,8,1","bedfordshire,12,1","believe,7,1,12,2","bend,12,1","best,7,1,12,3","better,1,1","between,13,3","biological,13,2","birds,12,1","bleed,1,1","blue,12,2,13,2","board,4,1","boarders,12,1","body,6,1","bonded,13,1","boost,17,1","both,1,1,10,1","bottles,3,1,12,1","bounce,13,1","boxes,12,1","branding,7,1","brass,1,9,2,8,3,8,4,8,5,8,6,8,7,8,8,8,9,8,10,8,11,8,12,8,13,8,14,8,15,8,16,8,17,8,18,4","bright,13,3","broad,13,3","brothers,17,1","built,13,1","bulbs,13,1","business,5,1,7,2,12,1,17,3","c02,1,1,10,1","cad,5,1","call,12,1","called,13,3","camera,12,1,13,1","cannot,13,2","cant,17,1","capital,12,1","carbon,13,2","card,5,1,7,1,12,1","care,1,1,12,1","carried,1,1,5,1,8,1","carry,1,2,12,1","cars,5,1,12,1","cascade,13,1","cases,12,1","cattle,1,1","cause,1,1,13,1","caused,13,1","causes,12,1","causing,13,2","cd,13,2","ce,1,1,6,1,12,1","center,13,1","centrally,12,1","certain,2,1,13,3","chairs,13,1","champaign,12,1","chances,4,1","change,1,2,11,1","changing,13,1","characters,12,1","charge,12,2","cheap,12,1","check,6,1,12,1","chemicals,1,1","cherry,4,1","chip,12,2","chlorine,13,1","choice,8,1,12,1","chose,1,1","chuck,8,1","circling,13,1","circular,1,1","circumference,1,1,7,1,12,1","class,13,22","classic,13,1","classifications,13,2","classified,13,2","clear,4,1","clients,7,1","clips,12,1","clocks,7,1,12,1,17,1","cloud,13,2","club,12,1","cm,13,2","cnc,8,2","co,13,5,17,1","co2,1,3,2,3,3,16,4,2,5,2,6,2,7,2,8,2,9,2,10,2,11,4,12,2,13,2,14,2,15,6,16,2,17,2,18,2","cocktail,12,1","code,6,3","codes,1,11,2,8,3,8,4,8,5,10,6,12,7,8,8,8,9,8,10,8,11,8,12,10,13,8,14,8,15,8,16,8,17,8,18,4","coherent,13,1","collection,13,3","color,13,3","colors,13,1","colour,1,2","coloured,4,1","columnated,13,1","com,11,1,12,1,13,1","combinations,13,1","comes,13,2","coming,12,2","committed,9,1","common,3,1,4,1,5,1,6,1,12,1,13,1","commonly,7,1,13,1","companies,12,4","company,1,5,2,4,3,4,4,4,5,4,6,4,7,5,8,4,9,4,10,4,11,4,12,9,13,4,14,4,15,4,16,4,17,4","compared,12,1","competitors,12,1","complete,2,1,4,1,12,1","completely,13,1","complex,3,1,12,1,13,1","components,2,1,3,1,13,1","comprehensive,1,1,8,1,12,1","computer,1,2,5,2","concentrated,13,1","concept,13,2,17,1","condition,13,2","confidentiality,7,1,12,1","connection,13,1,17,1","consider,13,1","consists,13,3","constantly,13,1","contact,1,2,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,6,10,1,11,2,12,3,13,1,14,1,16,1,17,1,18,1","containing,13,1","contains,13,2","contents,17,1","continuously,13,1","controlled,1,1,2,1,5,1,12,2","controls,5,1,13,3","conventional,1,3,12,3","copper,1,1","core,12,1,13,1","corel,12,1","corporate,17,1","correct,12,1","cost,1,1,3,1,5,1,7,2,12,9","could,12,1","courier,12,1","courtesy,13,1","cover,12,1","craft,17,2","cralo3,13,2","create,13,1","credit,17,1","credits,17,1","crystal,4,1,13,1","cuff,12,1","cup,13,1","current,7,1","currently,1,1,10,1","curved,7,1,12,1","custom,12,1","customer,1,1,7,1,9,1,12,5","customers,6,1,7,1,12,13","cut,1,1,3,1,13,2,15,1","cutting,3,1,13,2,14,1,15,1","cw,13,4","cylindrical,8,2","daily,4,1","damage,12,1,13,3","dangerous,13,2","data,6,4,12,3","date,6,1","dates,3,1,12,3","day,1,1,7,1,12,2","days,5,1","deal,12,4","deep,1,1,12,3","deg,12,1","degree,13,1","degrees,7,1","delivery,12,4,17,1","delrin,4,1","dental,13,1","dependent,13,1","depending,13,2","depends,12,1,13,2","depict,13,1","depicted,13,2","depth,12,2","depths,5,1","derived,13,1","describes,13,1","description,1,1","design,12,1","designated,13,1","designation,13,2","designations,13,2","desired,12,1,13,2","despatch,12,1","detailed,5,2,11,1,12,1","determined,13,1","determines,13,1","developed,8,1","device,13,1","devices,12,1,13,1","diameter,12,1","difference,13,1","different,1,1,13,10","diffuse,13,3","diffusely,13,2","dimension,6,1","dimer,13,2","dimers,13,1","diode,13,3","dioxide,13,2","dip,4,1","direct,7,1,12,1","direction,13,2","directional,13,1","directions,13,1","directly,5,1,12,1,13,2","directory,17,2","disadvantages,10,1","discharges,13,1","discrete,13,1","discuss,12,1","distinct,12,1","distributed,13,1","division,1,1,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,1,10,1,11,2,12,1,13,1,14,1,15,1,16,1,17,1,18,1","doing,12,1","don’t,4,1,12,3","door,12,1","down,2,1,8,1,10,1","downward,13,1","dpi,12,1","draw,12,1","drawings,5,1,12,1","drills,13,1","drop,8,1,10,1","drops,13,1","due,2,1,3,1,5,1","duration,13,2","during,5,1","dye,13,3","dyes,13,1","earlier,13,2","earn,17,1","earrings,12,1","easy,17,1","ebony,4,1","effect,6,1,13,1","effective,1,1,3,1,5,1,7,1,12,1","efficiently,13,1","either,1,1","elcome,1,1","electrical,13,1","electrically,13,1","electricity,13,2","electron,13,7","electronic,13,1","electronically,12,1","electrons,13,13","element,13,1","email,11,1,12,2","emergency,7,1","emission,13,12","emit,13,8","emits,13,5","emitted,13,3","emitting,13,1","employed,13,1","encounter,13,1","end,7,1,13,2","energies,13,2","energized,13,1","energy,2,1,13,27","engineering,1,14,2,13,3,13,4,13,5,19,6,13,7,13,8,13,9,13,10,13,11,14,12,13,13,13,14,13,15,12,16,13,17,13,18,5","engrave,1,4,3,2,4,1,8,2,12,3","engraved,1,1,4,4,5,1,7,1,12,35,16,4,17,1","engraver,7,1","engravers,1,2,2,8,3,8,5,4,7,1,8,1,9,5","engraving,1,28,2,18,3,17,4,16,5,24,6,21,7,24,8,22,9,16,10,20,11,22,12,36,13,20,14,20,15,20,16,16,17,20,18,8","entire,13,1","entry,12,1","environment,1,1","epoxy,4,1","especially,2,1,3,1","essential,13,1","etch,4,1","etched,4,4,12,5","etching,1,26,2,16,3,16,4,16,5,16,6,16,7,16,8,20,9,20,10,20,11,20,12,20,13,20,14,16,15,16,16,16,17,20,18,8","ether,4,1","even,5,1,12,3,13,1","eventually,13,1","everything,13,2","example,5,1,13,1","examples,1,1,2,1,3,1,4,1,5,2,6,1,7,1,8,7,9,1,10,1,11,2,12,1,13,1,14,1,16,1,17,1,18,1","excellent,12,1,13,1","exchange,17,3","excimer,13,1","excitation,13,2","excite,13,2","excited,13,14","excites,13,1","expect,13,1","expected,5,1","expenditure,12,1","experience,1,1,12,2","extra,12,1","f1,12,1","facilities,13,2","facility,7,1","fact,1,1","falconry,12,1","faq,12,4","faq’s,11,1,12,1","faqs,1,1,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,1,10,1,11,1,12,1,13,1,14,1,16,1,17,1,18,1","far,13,1","farther,13,1","fascinating,13,1","fast,2,1","features,13,1","fee,12,1","feel,5,1","fiber,4,1","figure,13,1","figures,13,1","filled,4,1","film,7,1","find,8,1,10,1,13,2","fine,7,1,12,1","finish,1,1,6,1","fir,13,2","fire,13,2","fires,13,1","first,10,1,13,1","fizz,13,1","flash,13,3","flashes,13,1","flashlight,13,4","flasks,12,1","flat,3,1","flexibility,12,1","fluorescent,13,1","fluoride,13,4","fluorine,13,1","flying,3,1","focused,13,2","folders,12,1","following,13,2","font,12,1","fonts,12,3","form,8,2,12,2,13,3,14,4,15,4","format,7,1,12,5","formula,12,1","forth,13,2","four,13,4","free,12,1,17,5","frequency,13,1","fridge,17,2","fronts,13,1","garnet,13,1","gas,13,4","gases,13,2","gift,3,1,7,4,17,1","gifts,1,14,2,12,3,12,4,12,5,12,6,12,7,14,8,12,9,12,10,12,11,12,12,13,13,12,14,12,15,12,16,16,17,14,18,4","give,1,1,5,1,12,2","given,8,1","gives,1,1,12,3","giving,13,1","glass,1,1,2,1,3,1,4,4,7,1,12,1","global,12,1","gobos,12,1","gold,12,2","golf,12,1","good,2,1,3,1","grand,12,1","greater,13,1","green,13,4","ground,13,5","gun,12,1","half,13,3","hall,12,1","hand,13,1","handle,8,1,12,2","happens,13,3","happy,7,1,12,2","hard,13,1,17,1","having,6,1","hazard,13,6","hazardous,13,4","head,12,1","heads,12,1","headstone,12,1","heat,13,6","heating,1,9,2,8,3,8,4,8,5,8,6,8,7,8,8,8,9,8,10,8,11,8,12,8,13,9,14,8,15,8,16,8,17,8,18,4","heavily,12,1","helium,13,6","help,1,2,7,1,12,1,17,1","helpful,13,1","hene,13,2","hertfordshire,12,1","hesitate,12,1","high,1,3,2,1,12,4,13,5,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arrFiles=new Array();arrFiles[0]=new Array(1,"","2005-02-15"," L Squared Lasers UK - Laser Engraving, Marking and Etching offering uk based subcontract service","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 W elcome to the L Squared Lasers Home Page, we offer a comprehensive laser engraving, marking & etching subcontract service. At L Squared we pride ourselves on our quality and our rapid turn around times. With many years of laser engraving experience our aim to achieve 100% customer satisfaction. We are a UK based operation and use state of the art Yag and C02 lasers which allow us to engrave almost any material you care to mention. You can look in the CO2 and YAG sections for a description of the different type of laser we operate. So what is laser marking / engraving? Unlike conventional engravers we use an intense beam of light instead of a rotating or vibrating tool, this beam can either vaporise a small area of the surface ( laser engraving ) or cause a change in the colour of the surface of the material ( laser marking ) this beam is controlled by a computer at very high speeds and accuracy to give outstanding quality at a very cost effective price. Almost all materials can be laser engraved / marked. Because no inks are used the marks are both permanent and the process is kind to environment. Laser engraving can be used for many thousands of applications from computer keyboards to a one off special promotional gifts. With advanced software we can engrave practically anything from Bar Codes & 2D codes to photographs and company logos. Some times laser marking is referred to as laser etching, unlike conventional etching, laser etching needs no masks or chemicals, Laser etching gives a better quality finish as there is never any bleed out and the marking is more permanent. Laser engraving can be used for most of the jobs currently being carried out by conventional industrial engravers. Home L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video As a little taster of just a few of the things we do we can laser engrave Steel, Aluminium, Titanium, Copper, Brass in fact any metal you chose to mention. We can also laser mark most plastics from cattle tags to backlit day/night key switches. We can carry out deep engraving for the manufacture of mould tools and actually change to colour of some metals by super heating them. We can also engrave & cut wood, glass & leather. We carry out work for the promotional industry, marking logos onto gifts to a very high standard. We also mark many surgical tools with CE marks 2d & 3d codes for tractability. For the Engineering & Aerospace industries we mark part numbers, logos and scales to a very high accuracy & have the ability to mark circular parts around their circumference with our rotary marking attachment. If you think subcontract laser engraving, laser marking or laser etching may help you please contact us, we are here to help !",17);arrFiles[1]=new Array(2,"yag.html","2005-02-15"," L Squared UK - Industrial engravers , laser engravers , yag laser marking","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Yag Laser Engraving A YAG Laser is probably the most versatile of lasers used for the marking and engraving of components. It can work on most materials but due to its wavelength it's especially good on metals. YAG lasers can produce massive pulses of energy that vaporise material in an instant. The only down side of a YAG is they will not mark certain materials like glass, leather and wood so a CO2 must be used for these. The YAG laser is controlled by two high-speed mirrors and can achieve incredibly fast marking times. Our YAG laser is complete with a rotary axis, which mean round parts are no problem. A Yag Laser in Operation Yag L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",11);arrFiles[2]=new Array(3,"co2.html","2005-02-15"," L Squared UK - Industrial engravers , laser engravers , co2 laser marking","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 A CO2 Laser is probably the most common of lasers used for the marking and engraving of components. It can work on materials but due to its wavelength it’s especially good on materials like glass, leather and wood . The CO2 laser normally has flying optics which means it can engrave large areas and be used to cut thin sheets of plastics and wood and paper. We have used the CO2 to engrave wine bottles with wedding dates as they make a cost effective personalised gift. Because the CO2 uses a flat bed it is ideal for cutting complex shapes in plastics & wood & it ideally suited to the Awards industry. CO2 Laser CO2 L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",11);arrFiles[3]=new Array(4,"materials.html","2005-02-15"," L Squared Lasers UK - Materials that can be laser engraved marked or etched","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Plastics ABS Acrylic Delrin DIP Plastic Epoxy Lexan Lucite (clear) Lucite (painted) Melamine Mylar Nylon (glass filled) Nylon (Zytall) PES (poly ether-sulfone) Phenolic Plaskon Polycarbonate Polyethylene Polyurethane PVC Rynite Ryton Styrene Teflon Thermal Reinforced Resins Valox Vandar Wood Oak Maple Pine Walnut Mahogany Cherry Ebony Plywood Veneer Laminated Pressed Fiber Board Rubbers Vulcanized Neoprene Silicon Base Glass Crystal Recycled Glass Coloured Glass Here is a list of just some of the more common materials we laser engrave, mark & etch on a daily basis, this list is by no means complete so don’t worry if your material is not mentioned, the chances are we will be able to mark it ! Materials L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",13);arrFiles[4]=new Array(5,"engineering.html","2005-02-15"," L Squared Lasers UK - Industrial engravers offering a subcontact job shop laser engraving,marking service","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Laser Engraving and marking has many applications useful to the engineering industries. We have marked vandal proof keyboards to identification tags on oil rigs. Due to the low stresses that are placed on the parts during the engraving process, laser marking is ideally suited for the Aerospace industry. Indeed laser engraving is now the expected norm for any aerospace parts. Codes (1D & 2D codes), Logos and part numbers can be placed permanently onto virtually any part. Because the process is computer controlled, serial numbers can be accommodated with ease. Engineering The laser is so accurate, even a detailed schematic taken directly from your CAD drawings can be placed onto a panel the size of a business card. Highly detailed engraving can be carried out to allow the manufacture of mould tools to depths of over 1.0 mm. The pictures are just a few examples of the products that have been laser marked, the marks are permanent and will give a real feel of quality to any parts marked. Because the laser is so rapid many thousands of parts can be marked in a very short time. You will surprised just how common laser marked / engraved parts are now days, for example most computer & mobile phone keypads are produced by laser. Also most of the instrument controls in cars are laser marked. If you need a quality permanent mark at a cost effective price then laser is the way to go. L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video Sequential Serial Numbers Added with ease!",12);arrFiles[5]=new Array(6,"medical.html","2005-02-15"," L Squared Lasers UK - Surgical and medical part marking and engraving subcontact services","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Common applications include the marking and engraving of CE marks , Hospital Codes , Date codes & Material Codes. A surgical instrument can be laser marked with information but left with a smooth finish. Many hospitals are using new type 2D or Data Matrix codes to mark all the instruments they have, therefore having total traceability of all items. The laser marking process will have no effect on the parts ability to be sterilized and is particularly suitable for medical implants that will be left inside the body. The 2D data matrix code is an ideal way to hold a large volume of data in a tiny area, its basically a bar code but in two dimension. At L Squared we have invested in a data matrix reader so we can verify any code we place onto customers items, we also have the ability to check most types of 1D barcodes. Medical L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",11);arrFiles[6]=new Array(7,"promtional.html","2005-02-15"," L Squared Lasers UK - Promotional and Advertising gift laser engraving service","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Laser engraving is commonly used in the branding of business gifts and promotional items. The laser is used to place company logos and information on a variety of items these include: Clocks Watches Pens Mag Lights LED Torches Key rings Business Card Holders Trophies & Awards Tankards/ Glass Wear At L Squared we only offer laser engraving and do not supply promotional items to any customers. This means we can offer total customer confidentiality, most of our clients in the promotional area get items sent direct to us from the manufacturer, let us do the engraving and then send them to the end user. This is a much more cost effective way to get laser engraved promotional gifts. We believe in keeping our set up & per piece cost among the lowest available but our quality and turnaround the best. We can offer an emergency service with next day turn around most of the time. We also have the ability to mark curved and round parts, unlike many laser engravers we can mark logos 360 degrees around the circumference of a part. We prefer art work in a vector format but have in house artwork facility who can work from a film all the way to a simple sketch. The lasers we use have a super fine spot that allows us to get incredible results every time. If you are unhappy with you current laser engraver or you would like to save money on your laser engraving then we will be only too happy to help. P romotional L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",14);arrFiles[7]=new Array(8,"examples.html","2005-02-15"," L Squared Lasers UK - Laser Engraving, Marking and Etching offering uk based subcontract service","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 We offer a comprehensive range of engraving services please use the drop down menus to choice form the given options. This is where you will find some examples of Laser engraving we have carried out over the years. We have a large bed X-Y table that allows us to engrave large parts (over 1 m Square) and a very large CNC rotary allowing use to handle cylindrical parts form.5mm to 450 mm +. Unlike many laser engravers we have developed methods that allow us to mark logos all the way around parts, not just in one area. CNC Rotary Chuck Used to engrave Large Cylindrical Parts Examples L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",10);arrFiles[8]=new Array(9,"contact.html","2005-02-15"," L Squared UK - Laser Engravers, Marking and Etching offering uk based subcontract service","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Contact L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video “ At L Squared we are committed to quality & customer satisfaction. We are one of the few industrial engravers that specialises 100% in the latest laser technology ! ”",12);arrFiles[9]=new Array(10,"lasers.html","2005-02-15"," L Squared UK - Laser Engraving, Marking and Etching","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Lasers We currently offer the services of two types of laser the first being a Nd.Yag which we refer to as a YAG laser & a C02 lasers. Both have advantages and disadvantages, you can find out more by using the drop down menus under Lasers . L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",9);arrFiles[10]=new Array(11,"news.html","2005-02-15"," L Squared Lasers UK - Laser Engraving, Marking and Etching offering uk based subcontract service","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 News We are now VAT registered as a division of Metrosystems so invoices will have VAT added Also please note our email has change to info@lasermarked.com L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video Site Map Home Contact Materials Examples Promotional Medical Engineering Detailed Photos Lasers Yag Engraving Yag Video CO2 Engraving CO2 Video How a Laser works FAQ’s News Links Login",11);arrFiles[11]=new Array(12,"faq.html","2005-02-15"," L Squared Lasers UK - Laser Engraving, Marking and Etching offering uk based subcontract service ","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 FAQ’s Why Should I use L Squared? L Squared was set up specifically to offer Laser engraving and marking service, our staff have many years experience working with laser marking machines to a very high level. This gives us a distinct advantages over our competitors as we are able to design & manufacture tooling jigs and complex machinery in house. We literally bend over backwards for our customers so their requirements of turn around, quality and price can be achieved. Where is L Squared located? L Squared is centrally located in the UK on the Bedfordshire / Hertfordshire boarders with excellent link to A1/M1 but most of our customers are not local to us. We are located next to major courier hub so we are able to despatch items for next day delivery up to 7.00pm which gives us just that little extra time for urgent / rush jobs. Being based in the UK does not mean we only deal with UK customers we also deal with international customers. What are the advantages of laser engraving over conventional engraving? Laser engraving / marking has many advantages over conventional engraving these include speed, cost , accuracy quality, repeatability, no -contact (curved surfaces can be accommodated) flexibility, quality & resolution. Laser engraving is permanent but causes little or no damage to the part being marked. What type of things have you marked in the past? Here is a list of just some of the things that we have laser engraved over the years; Laser engraved pens with company logos and names form customers data bases. Laser engraved plated parts with customer information. Laser etched surgical tools with data matrix codes and CE marks for identification Laser engraved awards for many blue chip companies. Laser engraved plastic boxes with customers logos. Laser marked parts for F1 grand prix cars. Laser marked golf club heads with customer specific codes. Laser engraved IPOD’s as gifts for some of the UK’s number one bands. Laser engraved cocktail shakers with customer logos 360 deg around the part. Laser engraved Champaign bottles with wedding dates. Laser engraved mould tools for plastic injection tooling Laser engraved maglites with company logos. Laser etched titanium wedding rings inside the diameter with dates & names. Laser engraved mobile phone keypads. Laser etched stainless steel instrument panels for aircraft. Laser engraved core sample tools with a 300mm long scale around the circumference. Laser marked plastic / steel vandal proof keyboards. Laser engraved titanium aerospace parts with serial numbers. Laser etched Gobos for light show companies with images up to 1000 dpi Laser engraved a slate headstone with logos and text. Laser engraved Hall Marks into gold earrings. Laser engraved gun stocks with artistic pictures of animals. Laser engraved Hip Flasks with detailed drawings. Laser engraved tankards for the RAF with officer rank & information. Laser engraved watch backs with logos & dates. Laser engraved stainless steel rules with scales. Laser engraved clocks,business card holders,folders,pen sets,& pen knifes in huge quantities. Laser engraved keyrings with company logos. Laser engraved trophy’s for local organisations. Laser marked plastic USB Memory Sticks with logos. Laser engraved head stones for pets memorials. Laser engraved barcodes 1d and data matrix 2d directly onto steel parts. Laser engraved machine tool parts with part numbers. Laser marked surgical implants. Laser engraved door entry panels with deep vandal proof characters. Laser engraved high quality / cost after market motorcycle parts. Laser engraved jewellery including cuff-links,necklaces,tie pins & money clips in gold & silver. Laser marked radio tracking devices for tracking birds of pray used in falconry. We could go on & on with this list but hopefully it will give you a rough idea of what we can do. What types of material can you laser mark / engraved? Basically most metals, plastics, rubber, glass & wood but please check out our materials page which will give you a more comprehensive list. What are the cost & turn around times? The cost is worked out by the time it takes us to complete the job, we believe we have among the lowest pricing structure around with very low set up & per piece prices, we normally can turn parts around in under a week but if the job is really urgent we have even done same day work but this depends on our work load & the quantity of work you may need doing. Please call or email for a quote . W hat Type of fonts do you have? Because the laser engraving process is controlled by a PC we can engrave any True Type Font this gives us literally thousands of fonts for you to choice from. Most customers are happy with Arial, Times New Roman or Script for standard jobs but we can handle almost anything. What is the best format for artwork for us to send? The best way to send artwork is electronically to our email info@lasermarked.com & if you can in a vector format, we love artwork in Corel draw (V10) or Adobe Illustrator (V4) in PC format (no MAC please). We can also take JPEGs TIFFs and most other type of artwork you care to mention but this may incur a small artwork fee. We can also work form camera ready artwork or even just a sketch we have a large library of major company logos already in the correct format so if you are from a well know company you probably wont need to send us anything. C an you arrange delivery to my customers so it looks like its coming from me? Yes we can, many of our customers get plane stock sent direct to us along with their custom delivery note, we the arrange packaging in plain cover and ship to the desired location. For our larger customers we can hold stock of their items so when they get an order the lead times are reduced allowing very short lead times. D o you provide samples? Yes in most cases you can have one of your parts laser engraved / etched / marked free of charge (postage cost may apply for large items). Please contact us to discuss this. Do you have a minimum / maximum quantity? No we don’t we can handle from 1 to 10000 parts but we do have a minimum charge of ÂŁ25. How deep can you engrave? The engraving depth is controlled by the number of passes the laser beam makes over a part, we have engraved mould tools up to 5 mm in depth with a very fine spot 0.02 of a mm. This allows for a very high quality engraving but it takes a long time and so the cost can be relatively high (for laser engraving) but still cheap compared to many other methods. Wh o are your customer? We will never reveal the identity of our customers as we believe in total customer confidentiality but we deal with many large blue chip companies like Formula 1 racing teams to Global service providers, but we also deal with small companies and even individuals that just have one item to be engraved hopefully you will become one of our valued customers. If any of you questions have not been answered here then please don’t hesitate to get in touch with us. We are only to happy to help ! L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video Why Should I use a Subcontract laser engraving / marking service ? Subcontract laser engraving is often the most cost effective may to get your items marked / engraved. We have invested heavily in top of the line lasers to carry out our work and our staff have many years experience. With subcontract laser engraving you don’t have the vast initial capital expenditure, the running cost or staff time and training to worry about. Why Should I use a Subcontract laser engraving / marking service ? Why Should I use L Squared? Where is L Squared located? What are the advantages of laser engraving over conventional engraving? What type of things have you marked in the past? What types of material can you laser mark / engraved? What are the cost & turn around times? What Type of fonts do you have? What is the best format for artwork for us to send? Can you arrange delivery to my customers so it looks like its coming from me? Do you provide samples? Do you have a minimum / maximum quantity? How deep can you engrave? Some common questions we get asked are;",24);arrFiles[12]=new Array(13,"howlasersworks.html","2005-02-15","L Squared UK - Laser Engraving, Marking and Etching Services UK : How a laser works","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 What's Your Wavelength? A ruby laser (depicted earlier) is a solid-state laser and emits at a wavelength of 694 nm. Other lasing mediums can be selected based on the desired emission wavelength (see table below), power needed, and pulse duration. Some lasers are very powerful, such as the CO 2 laser, which can cut through steel . The reason that the CO 2 laser is so dangerous is because it emits laser light in the infrared and microwave region of the spectrum. Infrared radiation is heat, and this laser basically melts through whatever it is focused upon. Other lasers, such as diode lasers, are very weak and are used in today? s pocket laser pointers. These lasers typically emit a red beam of light that has a wavelength between 630 nm and 680 nm. Lasers are utilized in industry and research to do many things, including using intense laser light to excite other molecules to observe what happens to them. Here are some typical lasers and their emission wavelengths: Laser Type Wavelength (nm) Argon fluoride (UV) 193 Krypton fluoride (UV) 248 Nitrogen (UV) 337 Argon (blue) 488 Argon (green) 514 Helium neon (green) 543 Helium neon (red) 633 Rhodamine 6G dye (tunable) 570-650 Ruby (CrAlO3) (red) 694 Nd:Yag (NIR) 1064 Carbon dioxide (FIR) 10600 Laser Classifications Laser warning sign Lasers are classified into four broad areas depending on the potential for causing biological damage . When you see a laser, it should be labeled with one of these four class designations: · Class I - These lasers cannot emit laser radiation at known hazard levels. · Class I.A. - This is a special designation that applies only to lasers that are not intended for viewing, such as a supermarket laser scanner. The upper power limit of Class I.A. is 4.0 mW. · Class II - These are low-power visible lasers that emit above Class I levels but at a radiant power not above 1 mW. The concept is that the human aversion reaction to bright light will protect a person. · Class IIIA - These are intermediate-power lasers (cw: 1-5 mW), which are hazardous only for intrabeam viewing. Most pen-like pointing lasers are in this class. · Class IIIB - These are moderate-power lasers. · Class IV - These are high-power lasers (cw: 500 mW, pulsed: 10 J/cm 2 or the diffuse reflection limit), which are hazardous to view under any condition (directly or diffusely scattered), and are a potential fire hazard and a skin hazard. Significant controls are required of Class IV laser facilities. How Lasers Work by Matthew Weschler Lasers show up in an amazing range of products and technologies. You will find them in everything from CD players to dental drills to high-speed metal cutting machines to measuring systems. They all use lasers. But what is a laser? And what makes a laser beam different from the beam of a flashlight? Photo courtesy NASA The Optical Damage Threshold test station at NASA Langley Research Center has three lasers: a high-energy pulsed ND:Yag laser, a Ti:sapphire laser and an alignment HeNe laser. In this article, you'll learn all about lasers so you can completely understand this fascinating technology! The Basics of an Atom There are only about 100 different kinds of atoms in the entire universe. Everything we see is made up of these 100 atoms in an unlimited number of combinations. How these atoms are arranged and bonded together determines whether the atoms make up a cup of water, a piece of metal, or the fizz that comes out of your soda can! Atoms are constantly in motion. They continuously vibrate, move and rotate. Even the atoms that make up the chairs that we sit in are moving around. Solids are actually in motion! Atoms can be in different states of excitation . In other words, they can have different energies. If we apply a lot of energy to an atom, it can leave what is called the ground-state energy level and go to an excited level. The level of excitation depends on the amount of energy that is applied to the atom via heat, light, or electricity. Here is a classic interpretation of what the atom looks like: An atom, in the simplest model, consists of a nucleus and orbiting electrons. This simple atom consists of a nucleus (containing the protons and neutrons) and an electron cloud. It? s helpful to think of the electrons in this cloud circling the nucleus in many different orbits. Absorbing Energy Consider the illustration from the previous page. Although more modern views of the atom do not depict discrete orbits for the electrons, it can be useful to think of these orbits as the different energy levels of the atom. In other words, if we apply some heat to an atom, we might expect that some of the electrons in the lower-energy orbitals would transition to higher-energy orbitals farther away from the nucleus. Absorption of energy: An atom absorbs energy in the form of heat, light, or electricity. Electrons may move from a lower-energy orbit to a higher-energy orbit. This is a highly simplified view of things, but it actually reflects the core idea of how atoms work in terms of lasers. Once an electron moves to a higher-energy orbit, it eventually wants to return to the ground state. When it does, it releases its energy as a photon -- a particle of light . You see atoms releasing energy as photons all the time. For example, when the heating element in a toaster turns bright red, the red color is caused by atoms, excited by heat, releasing red photons. When you see a picture on a TV screen , what you are seeing is phosphor atoms, excited by high-speed electrons, emitting different colors of light. Anything that produces light -- fluorescent lights , gas lanterns , incandescent bulbs -- does it through the action of electrons changing orbits and releasing photons. The Laser/Atom Connection A laser is a device that controls the way that energized atoms release photons. Laser is an acronym for light amplification by stimulated emission of radiation , which describes very succinctly how a laser works. Although there are many types of lasers, all have certain essential features. In a laser, the lasing medium is ? pumped? to get the atoms into an excited state. Typically, very intense flashes of light or electrical discharges pump the lasing medium and create a large collection of excited-state atoms (atoms with higher-energy electrons). It is necessary to have a large collection of atoms in the excited state for the laser to work efficiently. In general, the atoms are excited to a level that is two or three levels above the ground state. This increases the degree of population inversion . The population inversion is the number of atoms in the excited state versus the number in ground state. Once the lasing medium is pumped, it contains a collection of atoms with some electrons sitting in excited levels. The excited electrons have energies greater than the more relaxed electrons. Just as the electron absorbed some amount of energy to reach this excited level, it can also release this energy. As the figure below illustrates, the electron can simply relax, and in turn rid itself of some energy. This emitted energy comes in the form of photons (light energy). The photon emitted has a very specific wavelength (color) that depends on the state of the electron's energy when the photon is released. Two identical atoms with electrons in identical states will release photons with identical wavelengths. Laser Light Laser light is very different from normal light. Laser light has the following properties: · The light released is monochromatic. It contains one specific wavelength of light (one specific color). The wavelength of light is determined by the amount of energy released when the electron drops to a lower orbit. · The light released is coherent . It is ? organized? -- each photon moves in step with the others. This means that all of the photons have wave fronts that launch in unison. · The light is very directional . A laser light has a very tight beam and is very strong and concentrated. A flashlight, on the other hand, releases light in many directions, and the light is very weak and diffuse. To make these three properties occur takes something called stimulated emission . This does not occur in your ordinary flashlight -- in a flashlight, all of the atoms release their photons randomly. In stimulated emission, photon emission is organized. The photon that any atom releases has a certain wavelength that is dependent on the energy difference between the excited state and the ground state. If this photon (possessing a certain energy and phase) should encounter another atom that has an electron in the same excited state, stimulated emission can occur. The first photon can stimulate or induce atomic emission such that the subsequent emitted photon (from the second atom) vibrates with the same frequency and direction as the incoming photon. The other key to a laser is a pair of mirrors , one at each end of the lasing medium. Photons, with a very specific wavelength and phase, reflect off the mirrors to travel back and forth through the lasing medium. In the process, they stimulate other electrons to make the downward energy jump and can cause the emission of more photons of the same wavelength and phase. A cascade effect occurs, and soon we have propagated many, many photons of the same wavelength and phase. The mirror at one end of the laser is half-silvered, meaning it reflects some light and lets some light through. The light that makes it through is the laser light. You can see all of these components in the figures on the following page, which illustrate how a simple ruby laser works. Ruby Lasers A ruby laser consists of a flash tube ( like you would have on a camera ), a ruby rod and two mirrors (one half-silvered). The ruby rod is the lasing medium and the flash tube pumps it. 1. The laser in its non-lasing state 2. The flash tube fires and injects light into the ruby rod. The light excites atoms in the ruby. 3. Some of these atoms emit photons. 4. Some of these photons run in a direction parallel to the ruby's axis, so they bounce back and forth off the mirrors. As they pass through the crystal, they stimulate emission in other atoms. 5. Monochromatic, single-phase, columnated light leaves the ruby through the half-silvered mirror -- laser light! Three-Level Laser Here's what happens in a real-life, three-level laser. In the next section, you'll learn about the different types of lasers. Types of Lasers There are many different types of lasers. The laser medium can be a solid, gas, liquid or semiconductor . Lasers are commonly designated by the type of lasing material employed: · Solid-state lasers have lasing material distributed in a solid matrix (such as the ruby or neodymium:yttrium-aluminum garnet Yag lasers). The neodymium-Yag laser emits infrared light at 1,064 nanometers (nm). A nanometer is 1x10 -9 meters. · Gas lasers (helium and helium-neon, HeNe, are the most common gas lasers) have a primary output of visible red light. CO 2 lasers emit energy in the far-infrared, and are used for cutting hard materials. · Excimer lasers (the name is derived from the terms excited and dimers ) use reactive gases, such as chlorine and fluorine, mixed with inert gases such as argon, krypton or xenon. When electrically stimulated, a pseudo molecule (dimer) is produced. When lased, the dimer produces light in the ultraviolet range. · Dye lasers use complex organic dyes, such as rhodamine 6G, in liquid solution or suspension as lasing media. They are tunable over a broad range of wavelengths. · Semiconductor lasers , sometimes called diode lasers, are not solid-state lasers. These electronic devices are generally very small and use low power. They may be built into larger arrays, such as the writing source in some laser printers or CD players . What's Your Wavelength? A ruby laser (depicted earlier) is a solid-state laser and emits at a wavelength of 694 nm. Other lasing mediums can be selected based on the desired emission wavelength (see table below), power needed, and pulse duration. Some lasers are very powerful, such as the CO 2 laser, which can cut through steel . The reason that the CO 2 laser is so dangerous is because it emits laser light in the infrared and microwave region of the spectrum. Infrared radiation is heat, and this laser basically melts through whatever it is focused upon. Other lasers, such as diode lasers, are very weak and are used in today? s pocket laser pointers. These lasers typically emit a red beam of light that has a wavelength between 630 nm and 680 nm. Lasers are utilized in industry and research to do many things, including using intense laser light to excite other molecules to observe what happens to them. Here are some typical lasers and their emission wavelengths: Laser Type Wavelength (nm) Argon fluoride (UV) 193 Krypton fluoride (UV) 248 Nitrogen (UV) 337 Argon (blue) 488 Argon (green) 514 Helium neon (green) 543 Helium neon (red) 633 Rhodamine 6G dye (tunable) 570-650 Ruby (CrAlO3) (red) 694 Nd:Yag (NIR) 1064 Carbon dioxide (FIR) 10600 Laser Classifications Lasers are classified into four broad areas depending on the potential for causing biological damage . When you see a laser, it should be labeled with one of these four class designations: · Class I - These lasers cannot emit laser radiation at known hazard levels. · Class I.A. - This is a special designation that applies only to lasers that are not intended for viewing, such as a supermarket laser scanner. The upper power limit of Class I.A. is 4.0 mW. · Class II - These are low-power visible lasers that emit above Class I levels but at a radiant power not above 1 mW. The concept is that the human aversion reaction to bright light will protect a person. · Class IIIA - These are intermediate-power lasers (cw: 1-5 mW), which are hazardous only for intrabeam viewing. Most pen-like pointing lasers are in this class. · Class IIIB - These are moderate-power lasers. · Class IV - These are high-power lasers (cw: 500 mW, pulsed: 10 J/cm 2 or the diffuse reflection limit), which are hazardous to view under any condition (directly or diffusely scattered), and are a potential fire hazard and a skin hazard. Significant controls are required of Class IV laser facilities. An article taken form www.howstuffworks.com giving a excellent write up on the basic theory of laser operation which you may find informative. How Lasers Work L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",55);arrFiles[13]=new Array(14,"video.html","2005-02-15","Video of Yag laser engraving form L Squared laser subcontract laser . marking services uk","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Video Please click on the video icon to watch a small video of one of our YAG laser markers in action. This has not been speed up in any way, the material is anodised aluminium and what you are seeing is the laser cutting through the anodise to revel the base material. Pretty Quick isn’t it! L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",10);arrFiles[14]=new Array(15,"videoc.html","2005-02-15","Video of CO2 laser engraving form L Squared laser subcontract laser . marking services uk","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 L Squared Laser A division of Metrosystems Video Please click on the video icon to watch a video of a CO2 laser in action. The laser is being used to cut a thin sheet of plastic. This CO2 can be used for cutting out shapes in plastics & wood but does not have the power for metal.",8);arrFiles[15]=new Array(16,"photos.html","2005-02-15"," L Squared Lasers UK - Photo  \\'s of lasers engraved & marked personalised promotional gifts","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 Photos L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video",10);arrFiles[16]=new Array(17,"links.html","2005-02-15","L Squared laser reciprocal links page for engraving,marking,etching solutions.","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating laser engraving, uk, laser, marking, et","L Squared UK - Laser Engraving, Marking and Etching UK based company offering laser engraving, marking and etching on a variety of metals and plastics for automotive, aerospace, engineering industries and promotional gifts","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video LINKS LINKS Please note these links have no connection with L Squared and we cant be help responsible for their contents. W alsh Brothers Clocks Watches & Jewellery - High street shop with a wide range & international delivery. S ilkscreen printers F REE TRAFFIC Get free traffic to your site using InfoWizards Traffic Exchange! This new concept is based on a credit system. Basically you agree to surf other members web sites and earn credits which you can turn into FREE TRAFFIC to your site! Boost up Alexa rankings in the process. 100% FREE!? L aser Seeker - The Laser Product and Services Directory #1 Free Link Exchange Directory On The Web - Link Market Have you ever tried to exchange links, swap links, or trade links? Was it hard? Use link market instead; - it is easy to use, free and very smart. It will save you hours of work. Plastic Promotional Keyrings And Fridge Magnets Plus Promotional Plastic keyrings and fridge magnets plus promotional products we are uk craft suppliers. Our promotional products are high quality and ideal for self promotions ,craft workers, individuals and small business users ,we are uk keyring wholesalers Business Gifts Co - Engraved Business Gifts and Corporate Gift Ideas",13);arrFiles[17]=new Array(18,"login.html","2005-02-15","Login","laser engraving, uk, laser, marking, etching, promotional gifts, metals, surgical, steel, titanium, brass, aluminium, plastic, logos, lettering, engineering, aerospace, automotive, codes, mould tools, super heating","L Squared UK - Laser Engraving, Marking and Etching","L Squared Lasers For all your laser marking needs Telephone (01462) 816623 L Squared Laser A Division of Metrosystems Home Contact Materials Examples Lasers FAQs News Promotional Medical Engineering Yag CO2 How a Laser Works Yag Video CO2 Video Login Area UserID: Password: Login",9);arrFiles[18]=new Array(19,"lasermarking.AVI","2005-01-13","lasermarking.AVI","","","",706);