Tomorrow Today - A Laser Science Newsletter (2nd issue) - May 2013


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Tomorrow Today - A Laser Science Newsletter (2nd issue) - May 2013

  1. 1. Laser Science Celebrates 25years of Service in IndiaNewly Launched Prod-ucts: Coherent’s new Flareseries Coherent, Inc. USA ‘sSapphireTM lasers. Semrock’s 11-band filter New PCO.dimax highspeed cameras. Femtolasers Produktions’MOSAIC™ OSInside this issue:Addressing Future In-dustrial Needs - Beneq2Fun Zone: Did YouKnow?2Excimer Laser Treat-ment for Superior DieselEngines3Newly Launched Prod-ucts4Bringing Tomorrow’s Technology to Indian LabsLaser Science has recently made two new installa-tions in India, at the National Physical Laboratory(NPL) in Delhi and the Indian Institute of ScienceEducation and Research (IISER) in Kolkata.At NPL, Laser Science has installed a 35 fs, 1KHzRegenerative Amplified Laser system coupled withOptical Parametric Amplifier (OPA) from Coher-ent Inc, USA. The oscillator “Micra” is a one box,tunable broad-bandwidth oscillator integrated withthe DPSS laser Verdi. The output of this oscillator is> 350 mW @ 800 nm with an adjustable band-width of <30 nm to > 100 nm and peak tunabilityof 760 nm to 850 nm (30 nm bandwidth).The oscillator output is seeded to the “LegendEliteF HE+-II-USP” amplifier pumped with Evo-lution-30, a 20 mJ @ 1 KHz, 250 ns 527 nmDPSSL KHz pump laser. The output of the regen-erative amplifier is 4 mJ @ 1 KHz centered around800 nm with a pulse width of <35 fs.The TOPAS OPA offers a wavelength tunabilityfrom 190 nm to 2600 nm, thus covering the deepUV to NIR with an output pulse duration of ~60 fswhile the pulse width is measured by the short pulseautocorrelator model, PulseCheck, from APE.At IISER Kol-kata, Laser Sciencehas installed a 60 fs,250 KHz Regenera-tive Amplified Lasersystem coupled withan OPA from Coher-ent Inc, USA. Theoscillator “Mantis” isa one box, broad-bandwidth (70 nm)oscillator with anintegrated pump la-ser, providing a fixedwavelength output of> 400 mW at 800nm.The oscillator output is seeded to a 250 KHz short-pulsed (~60 fs) amplifier “RegA 9050” with > 6 µJenergy. Repetition rate is variable from 1 KHz up to300 KHz. The output of the amplifier is split into twobeams to pump two short-pulse OPA’s, i.e. OPA9450 & 9850, which extends the wavelength coverageof RegA into visible & infrared spectral range.L A S E R S C I E N C E S E R V I C E S ( I ) P V T . L T D .MAY 2013ISSUE 2Laser Science Services (I) Pvt. Ltd, is pleased toannounce that this year, 2013, marks the comple-tion of 25years of its service to the scientific andindustrial community in India.Laser Science started the celebration of its silverjubilee year in March 2013, by holding the annualmeeting for all members of the LS family, in Naini-taal, a gorgeous hill station in Uttarkand, in theNorth of India.These celebrations were continued in Mahape,Navi Mumbai with the opening of the new LaserScience office on the second floor of the LS build-ing in April 2013. The inauguration of the newoffice was done by performing a small havan - anIndian ritual performed in order to spread positiv-ity at the beginning of anything new.Dr. Lalit Kumar, Founder andmanaging director, Laser Sci-ence, fondly recalls his journeyof the past 25 years. “The last 25years of my life have been anexciting journey, building LaserScience to get it to where it istoday. I started LS partneringwith Coherent Inc. and I amhappy and thankful that this asso-ciation continues till date. Simi-larly I am thankful to all my principals, customers,the Indian scientific community and most impor-tantly my entire team at Laser Science, for theirimmense hard-work, dedication and unwaveringsupport,” he said.System installed at IISER, KolkataDr. & Mrs. LalitKumar at theinauguration of thenew office, atMahape, NaviMumbaiTomorrow Today- A Laser Science NewsletterSystem installed at NPL, Delhi
  2. 2. Beneq, based in Finland, is a leading sup-plier of production and research equip-ment for thin film coatings, as well as oneof the world’s premier manufacturers anddevelopers of thin film electroluminescent(TFEL) displays.Beneq thin film equipment is used for sub-micron thick coatings in photovoltaics,organic electronics, glass strengthening,and other emerging thin film applications.Improving the efficiency of CIGSsolar cellsThe Beneq TFS 1200B is the first ALD system capable of handling real-sized thin filmPV module substrates. It is not just size but also throughput that makes this system idealfor PV production: for a panel of size 1200 × 1600 (mm) onto which a 50 nm thick Zn(O,S) buffer layer is deposited, the TFS1200B can reach a throughput of 60 panels per hour, translating into approximately 140 MWp/year.Enhancing the endurance of organic electronicsBeneq is pioneering the use of ALD in the organic and printed electronics industry by offering an equipment portfolio spanningfrom laboratory to industrial production. Beneq can offer customers the capability to size-up from 200 × 200 (mm) rigid substratesized R&D systems to Gen5 industrial systems. Considering the fact that interest towards flexible substrates has increased substan-tially in recent years, the introduction of Roll-to-Roll ALD, another Beneq first, does not come as much of a surprise. Beneq’sWCS 500 is capable of coating 400,000 m²/year at a web width of 500mm.Addressing Future Industrial Needs - BeneqDID YOU KNOW: Interesting Facts About LasersPAGE 2TOMORROW TODAY- A LASER SCIENCE NEWSLETTERDID YOU KNOW?1. When NASA invented the Curiosity Rover, whichsuccessfully landed on Mars last August, it openedup a new chapter in space exploration: the use oflaser-based instruments to probe the surface com-position of other planets. Otherwise known as theMars Science Laboratory (MSL), the rover whichweighs nearly a ton, was designed to be a labora-tory on wheels, capable of performing sophisti-cated analyses on the red planet’s rough terrain.2. ‘Light Touch’ is an interactive projector that in-stantly transforms any flat surface into a touchscreen, allowing users to interact with multimediacontent using multi-touch technology. LightTouch uses ‘holographic laser projection’ technol-ogy, which creates bright, high-quality video im-ages in WVGA resolution. Integrated infraredsensors detect motion and turn the projectedimage into a 10.1” virtual touch screen, sothe user can control the projector and inter-act with applications by simply touching theimage.3. In the field of forensic sciences, bullet trajec-tory laser rods are used to improve precisionand save time. These rods are used to deter-mine the exact point of origin and distancefrom which a gun was fired, or in the casewhere more than one person may have beenshooting, the exact original location andtrajectory angle of each bullet fired.4. Spectroscopy, which involves the analysis ofmaterials by studying how they reflect andabsorb light, can be used forthe identification of traces of substance resi-dues such as accelerants, illegal drugs, orpoisons, in forensic science. Infrared laserspectroscopy is used to detect explosivecomponents or illegal drugs in samples.Beneq holds the world record in substrate size coatedwith ALD with this 1200 × 1200 (mm) glass sub-strate coated with a Zn(O,S) buffer layer for CIGSsolar cells. Subsequently, capability to handle 1200 ×1600 (mm) size substrates has been developed.NASA’s Curiosity Rover used the Mars HandLens Imager (MAHLI)to capture 55 high-resolution images,which were stitchedtogether to create thisfull-color self-portrait.Coatings enabled by Beneq ALD are present in manydifferent kinds of products, from solar cells to flexibleelectronics.
  3. 3. -ogy of laser treated cylinders at the microscopicscale. They also took a section from the upper partof one of the cylinders from a TDI engine after 800hours of running time. This cross-section was com­positionally analyzed by TEM (transmis­sion elec-tron microscopy).Analysis of the SEM and TEM results indicates thatUV laser nitridation produces three effects thatcontribute to wear reduction. First, the surface is an­nealed to a depth of about 2 µm, allowing overallsmoothing of the surface. Second, the process cre-ates a hard nitrogen-rich surface layer, which is stillpresent even after 800 hours of engine operation.And, perhaps most important, the laser creates amicro-hydrodynamic structure due to opening thegraphite lamellae.These spaces act as tinywells that capture thelubrication oil, result-ing in a unique tri-bological effect.Mechanical honingcreates a surface topol-ogy characterized bymyriad microscopicgrooves. These act asinterlinked microchan-nels, allowing oil toescape as the ringmoves over the linersurface. In contrast,the new process cre-ates tiny wells that areisolated and success-fully trap the oil. Thering and liner are thusprevented from con-tact by riding on thesetiny droplets, resultingin micro-hydrodynamic lubrication.Lasers are already well established tools in manyaspects of automotive manufacturing. Previously,their primary benefit has been to lower productioncosts through increased process speed, automation,and consistency. These results for excimer-laser-based nitridation of diesel cylinder liners indicatetheir important role as the industry strives for ever“greener” cars.The friction between the piston rings and ironcylinder liners in diesel engines can account for upto 60% of the total engine frictional loss. Reduc-ing this friction can improve fuel efficiency anddecrease long-term wear, which can reduce oilconsumption and particulate emissions.In this context, engineers at Coherent, SMSElotherm, and Audi AG have jointly developed anew laser-based technique for treating the surfaceof diesel cylinder liners that produces unique low-friction surface conditions. Wear tests at Audihave proven the usefulness of this ultraviolet lasernitridation process, which may have importantimplications for future diesel development.The new process is quite different from the exist-ing use of infrared lasers for surface hardening,and is based on an ultraviolet excimer laser andnitrogen-assist gas. The short wavelength 308nm,high-energy photons from the excimer laser inter-act directly with the inter-atom­ic bonds that bindmaterials together, thus allowing the atoms tomove freely.In the laser nitridation process, an engine block ispositioned in a purpose-built workstation incor-porating an excimer laser - the Lambda SX highpower excimer laser series. Beam-delivery opticsdirect the beam at the cylinder wall and scan thewall along the length of the cylinder. The engineblock is rotated during the process to expose theentire inner surface of the cylinder liner. A nitro-gen-assist gas is applied during laser irradiation.Extensive testing was conducted on a four-cylinder turbodiesel direct injection (TDI) en-gine displacing 1.9 L. Additional studies wereperformed on a V6 diesel engine. The four-cylinder TDI engine was run on dynamic testbeds for 602hours using standard enduranceprotocols designed to simulate multiple dutycycles.In addition, wear tests were conducted underconstant rpm conditions at several differentrpm values. Engine performance was moni-tored throughout all these tests. To understandhow the laser treatment causes improvements,engineers also took SEM (scanning electronmicroscopy) images to examine the surface topol-Excimer Laser Treatment for Superior Diesel EnginesPAGE 3ISSUE 2An excimer laser based work-station, shown here schemati-cally, was custom-built for thelaser nitridation process usedon engine block liners.Scanning electronic microscope photographs of liner surfacetopography show (left) surface after conventional mechanicalhoning - note criss-crossing groove texture; and (right) the samesurface after excimer laser treatment.Article Courtesy: RalphDelmdahl, BurkhardFechner, CoherentGmbH, Germany
  4. 4. A-454, TTC Industrial AreaMIDC, Mahape, Navi Mumbai 400 701Phone: 91-22-41553232Fax: 91-22-2778 1672E-mail: in 1988 by Dr. Lalit Kumar, Laser Science is In-dias premier distributor of lasers and spectroscopy instru-ments. Our range of products covers scientific and indus-trial laser systems, spectroscopy, microscopy & imagingsystems. We distribute over 30 major brands that are repu-table global market leaders in their respective fields. Ourextensive customer coverage includes R&D institutions andcommercial & industrial organizations all over India.Our strategic focus is on continuously exceeding customerexpectations, a commitment to quality, proactive marketdevelopment and providing the most superior quality cus-tomer service.Headquartered in Navi Mumbai , Laser Science has regionalsales offices in Chennai, Delhi & Kolkata.L A S E R S C I E N C ES E R V I C E S ( I ) P V T . L T D .with Steep Edges Within a 100nm Wide Spec-tral Window.The filter has high transmission and exceptionalblocking characteristics outside each of the elevenbands. The unmatched spectral complexity of this 11-band filter was designed specifically to match thecorresponding formaldehyde fluorescence emissionspikes over the 380-480nm wavelength range. Thefilter can be utilized in investigating homogeneouscharge compression ignition (HCCI) type combus-tion processes.PCO Expands its PCO.dimax High Speed Se-ries by Two New ModelsBoth cameras will be available as monochrome ver-sions with the following resolutions and frame rates:pco.dimax HS2: 5469 fps @ 1400 x 1050 pixelpco.dimax HS4: 2277 fps @ 2000 x 2000 pixelFemtolasers Produktions GmBH launchesOctave spanning GDD module MOSAIC™ OSMOSAIC™ OS can support pulse durations below 4fs. The employed dispersive mirrors exhibit highreflectance over a bandwidth of 600 nm between 400nm and 1000 nm and controlled group delay disper-sion (GDD) over more than one optical octave, be-tween 450 nm and 960 nm.The New Flare, a Compact, Pulsed Laserfrom Coherent, Inc.The Flare series provides a superior and cost-effective alternative to older gas lasers and first-generation solid-state lasers for life sciences andinstrumentation applications. It has three wave-length versions available - near infrared (1064nm), green (532 nm) and ultraviolet (355 nm).Specifically Flare’s shorter pulsewidth (< 2 nsversus 4 ns for the N2 laser) translates directlyinto superior time of flight (ToF) resolution. Itshigher pulse repetition frequency of 1 kHz (versus<100 Hz for a N2 laser) reduces data acquisitiontimes by an order of magnitude.Coherent, Inc. Introduces a New Series ofSapphire™ LasersA new series of Sapphire™ lasers, at 594 nm areideal for fluorescence-based applications in lifesciences. Based on Coherent’s unique opticallypumped semiconductor laser (OPSL) technology,these new Sapphire™ 594 lasers offer superiorperformance, reliability, efficiency and valuecompared to older technologies.Semrock Proudly Announces the Produc-tion of the World’s First 11-band FilterNewly Launched ProductsB R I N G I N G T O M O R R O W ’ S T E C H N O L O G Y T O D A YCoherent’s new FLAREseries of lasersFemtolasers Produktions’MOSAIC™ OSPCO.dimax high speedseries