Infobox Laboratory name LaserScience & Technology Centre motto logo image Image with inadequate rationale ... www.drdo.org labs ecs lastec index.shtml LASTEC Home Page footnotes LaserScience and Technology Centre ... , it is the main DRDO lab involved in the development of Laser s and related technologies. LASTEC functions under the DRDO Directorate of Electronics & Computer Science. History LASTEC is the oldest ... ref It was established in 1950 as Defence Science Laboratory DSL which was a nucleus laboratory ... Joseph title LASTEC the Laser Lab url http frontierindia.net lastec the laser lab publisher Frontier ... as Defence Science Centre. The centre consolidated its R&D activities towards more specific and application ... of duties with its major thrust on LASERS. Intensive work commenced on Solid state laser s, Carbon dioxide laser s, ALARM, laser rangefinder , Optical fiber Fibre Optic Gyroscope , Ring laser gyroscope s, Laser Intruder Alarm systems, etc. In 1986, the centre was made responsible for the development ... LASTEC on 1 Aug 1999 to emphasize its core focus of Laser technology. Areas of Work DRDO Laboratories LASTEC s primary focus is the research and development of various laser materials, components and laser ... on High power laser technology. As a defence technology spin off, LASTEC has also been engaged in the development ... of high power laser LASTEC works in following field 1 Chemical oxygen iodine laser 2 Gas dynamic laser 3 Hf Df laser References reflist External links http www.drdo.org labs ecs lastec index.shtml LASTEC Home Page http www.drdo.com labs lastec index.html?d Search DRDO Website&select 35 About LaserScience and Technology Centre at Defence Research and Development Organisation DRDO cite news first P. Chacko last Joseph title LASTEC the Laser Lab url http frontierindia.net lastec the laser lab ... quote cite news first P. Chacko last Joseph title Solid State Laser Developments at LASTEC url http frontierindia.net solid state laser developments at lastec publisher Frontier India Defence and Strategic ... more details
The Institute for LaserScience is a department of the University of Electro Communications , located near Tokyo , Japan . Location The Institute for LaserScience is located at 1 5 1 Chofugaoka, Ch fu ... googlemaplink display title DEFAULTSORT Institute For LaserScience Category Japanese national ... right 200px thumb Fiber disk laser Image DiskLaserJPEG.jpg 200px right thumb Disk laser ... of gas laser s, especially excimer laser s. Between 1990 and 2005, the Institute developed fiber disk laser s, disk laser active mirror ref name Ueda cite journal url http bookstore.spie.org index.cfm?fuseaction DetailPaper&ProductId 143686&coden PSISDG author K. Ueda coauthors N. Uehara title Laser ... B volume 83 issue 3 pages 363 366 year 2006 doi 10.1007 s00340 005 2083 z ref Current research Laserscience , solid state laser s http www .ils.uec.ac.jp Essl.html, br in particular, generation of very short pulses http www.ils.uec.ac.jp Ehighintensity.html , fiber laser s Frequency stabilization, http .... F. Bisson, J. Dong, and K. Ueda title Surface loss limit of the power scaling of a thin disk laser ... www.ils.uec.ac.jp dima diskpreprint.pdf journal Preprint ILS UEC year 2007 ref of disk laser s and limits for density of excitations in laser materials. ref name avala cite journal author J. F.Bisson ... and McCumber relation in physics of laser materials. ref name Mccumber cite journal author D.Kouznetsov coauthor title Broadband laser materials and the McCumber relation journal Chinese Optics ... errr cite journal author D.Kouznetsov title Efficient diode pumped Yb Gd sub 2 sub SiO sub 5 sub laser ... 005 0445 8 url http www.ils.uec.ac.jp dima CoupledOptRev.pdf ref of fiber laser s. Random laser ... toda cite journal author D. Kouznetsov coauthors J. F. Bisson, J. Li, K. Ueda title Self pulsing laser ... cite journal author J.Dong coauthors A. Shirakawa, K. Ueda journal Laser Physics Letters title Switchable pulses generation in passively Q switched multilongitudinal mode microchip laser volume ... more details
The Arthur L. Schawlow Prize in LaserScience is a prize that has been awarded annually by the American Physical Society since 1991. The recipient is chosen for outstanding contributions to basic research which uses laser s to advance our knowledge of the fundamental physical properties of materials and their interaction with light . The prize is named after Arthur L. Schawlow 1921 1999 , laser pioneer and Nobel laureate , and as of 2007 it is valued at 10,000. Recipients 2009 Robert E. Field 2008 James Bergquist 2007 Szymon Suckewer 2006 Paul Corkum Paul B. Corkum 2005 Marlan O. Scully 2004 Federico Capasso 2003 David E. Pritchard 2002 Stephen E. Harris 2001 David Wineland David J. Wineland 2000 Richard Neil Zare 1999 Carl E. Wieman 1998 William D. Phillips 1997 Charles Shank Charles V. Shank , Erich Ippen Erich Peter Ippen 1996 Theodor W. H nsch 1995 Richart E. Slusher 1994 Steven Chu 1993 John L. Hall 1992 Yuen Ron Shen 1991 P. P. Sorokin Peter P. Sorokin External links http www.aps.org programs honors prizes schawlow.cfm Arthur L. Schawlow Prize in LaserScience , American Physical Society DEFAULTSORT Schawlow, Arthur L., Prize In LaserScience Category Laser awards and associations de Arthur L. Schawlow Preis f r Laserphysik pt Pr mio Arthur L. Schawlow de F sica do Laser ... more details
of a single longitudinal mode being much narrower still. See also Laserscience The gain ... consumer electronics , information technology , science , medicine , industry , Laser applications ...Other uses pp semi small yes Infobox Product title Laser image Image Military laser experiment.jpg center 250px caption United States Air Force laser experiment inventor Charles Hard Townes launch year 1960 company available Worldwide current supplier last production notes File Laser play.jpg 250px thumb Laser beams in fog, reflected on a car windshield A laser is a device that emits light electromagnetic ... s. The term laser originated as an acronym for Light Amplification by Stimulated Emission of Radiation ... laser title laser publisher Reference.com ref The emitted laser light is notable for its high degree ... diffraction limited , often a so called pencil beam. Laser beams can be focused to very tiny spots ... to red 700nm . The word laser started as an acronym for light amplification by stimulated emission ... visible light , hence infrared laser , ultraviolet laser , X ray laser , and so on. Because the microwave predecessor of the laser, the maser , was developed first, devices of this sort operating ... , the laser was called an optical maser this term is now obsolete. ref cite web title Schawlow and Townes invent the laser publisher Lucent Technologies year 1998 url http www.bell labs.com about history laser accessdate 2006 10 24 ref A laser which produces light by itself is technically an optical ... amplifiers have come to be referred to as laser amplifiers , notwithstanding the apparent redundancy ..., meaning to produce laser light, ref http dictionary.reference.com browse lase Dictionary.com lase ref especially in reference to the gain medium of a laser when a laser is operating it is said to be lasing. Further use of the words laser and maser in an extended sense, not referring to laser technology or devices, can be seen in usages such as astrophysical maser and atom laser . Design Image ... more details
Infobox Pinball title Laser Cue manufacturer Williams gaming company Williams image system Williams System 7 designer Designer Edward Tomaszewski br Artwork Pam Erickson release February 1984 production 2,800 units Laser Cue is a 1984 electronic pinball machine produced by Williams gaming company Williams . The game features a Cue sports billiards oriented futuristic science fiction theme. The name is a reference to laser s and cue stick s. References Reflist Refbegin http www.ipdb.org machine.cgi?id 1414 Internet Pinball Database entry for Laser Cue Refend Category Pinball machines Category Williams games Category Cue sports toys and games pinball stub ... more details
theory Multiple prism grating laser oscillators Oscillator linewidth Spectral linewidth References reflist Category Optics Category Laserscience ...Two of the most distinctive characteristics of laser emission are coherence physics spatial coherence and coherence physics spectral coherence . While spatial coherence is related to the beam divergence of the laser, spectral coherence is evaluated by measuring the laser linewidth of the radiation. Although the concept of laser linewidth can have varied theoretical descriptions here we provide a simple experimental description. One of the first method used to measure the coherence of a laser was optical ... solution laser, Appl. Phys. Lett. 9 , 306 309 1966 . ref Laser linewidth in CW lasers Laser linewidth in a typical single transverse mode He Ne laser at a wavelength of 632.8 nm , in the absence of intracavity line narrowing optics, can be of the order of 1 GHz. On the other hand, the laser linewidth ... 1 kHz. ref L. W. Hollberg, CW dye lasers, in Dye Laser Principles , F. J. Duarte and L. W. Hillman ... quantum processes. Laser linewidth in pulsed lasers Laser linewidth from high power high gain pulsed ... nm. ref name FPS Laser linewidth from high power high gain pulsed laser oscillators, comprising line narrowing optics, is a function of the geometrical and dispersive features of the laser cavity. ref F. J. Duarte, Tunable Laser Optics Elsevier Academic, New York, 2003 Chapter 7. ref For example, an optimized multiple prism grating laser oscillators multiple prism grating laser oscillator can deliver ... MHz equivalent to math Delta lambda math 0.0004 nm at a laser wavelength of 590 nm . ref F. J. Duarte , Multiple prism grating solid state dye laser oscillator optimized architecture, Appl. Opt. 38 , 6347 6349 1999 . ref Laser linewidth notation In the frequency domain the laser linewidth is denoted as math Delta nu math and is given in units of GHz, MHz, or kHz. In the spectral domain the laser ... more details
resonators , by Ivan Grudinin and Lute Maleki. optics stub cs Ramanovsk laser it Laser Raman zh Category Laserscience ...The Raman laser is a byproduct of Raman scattering , discovered in 1928 by Nobel laureate Chandrasekhara Venkata Raman and Kariamanickam Srinivasa Krishnan in liquids and independently by Grigory Landsberg and Leonid Mandelshtam in crystals. When light hits a substance, it causes the atoms in the substance to vibrate sympathetically. The collision of photons with the substance causes some of the photons to gain or lose energy, resulting in a secondary light of a different wavelength. A Raman laser takes this secondary light and amplifies it by reflecting it and pumping energy into the system to emit a coherent laser beam. The most significant difference between a Raman laser and a standard laser is the absence of population inversion in a Raman laser. Recent research In 2002, researchers at UCLA demonstrated Raman light emission from optical wires on a silicon photonic chip and in 2004 they demonstrated the first silicon laser . In February 2005, researchers at Intel demonstrated the second generation of such lasers that are capable of operating in continuous mode on silicon chips. It is expected that these breakthroughs will greatly reduce the cost of optical computing and communications devices by 2010. Because of its crystalline structure, silicon atoms readily vibrate when hit with light. The Raman effect is 10,000 times stronger in silicon than in glass. In 2007, researchers at JPL Caltech have also discovered Raman lasing with fluorite resonators, demonstrating record low threshold and high efficiency. The Raman effect can lead to higher energy photon emission, or, more ...?URI OPEX 12 21 5269 Demonstration of a silicon Raman laser , by Ozdal Boyraz and Bahram Jalali. http ... nature journal v433 n7027 full nature03346.html A continuous wave Raman silicon laser , by Haisheng ... more details
A laser fence is a mechanism to detect objects passing the line of sight between the laser source and the detector ref http www.freepatentsonline.com 3825916.html http www.freepatentsonline.com 3825916.html accessed 26 Jan 2011 ref . Stronger lasers can potentially be used to injure someone or something passing the laser beam see mosquito laser ref Cite journal last Guth first Robert A year 2009 title Rocket Scientists Shoot Down Mosquitoes With Lasers journal Wall St. Journal ref harv url http online.wsj.com article SB123680870885500701.html ref . Sometimes laser fences are used in fiction with the ability to stop intruders by blocking or injuring them. It is a concept used frequently in videogames ref http www.giantbomb.com laser fence 92 5889 ref ref http cnc.wikia.com wiki Laser fence ref . The concepts of these fictional fences can be compared to other concepts like tractor beam tractor or repulsor beams. Notes reflist Category Fences Category Force lasers Category Fringe physics Category Science fiction weapons Category Ufology Category Video game gameplay ... more details
File Laser pointer pen.jpg thumb 240px Laser pointer pens color red, green, violet File Skylasers green laser pointers.jpg thumb right High powered green laser pointer A laser pointer or laser pen is a small portable and visible laser designed to highlight something of interest by projecting a small bright spot of colored light onto it. Doctors say that laser pointers with power less than 5 milliwatts ... recently caused permanent eye damage. See laser safety The small width of the beam and low power of typical laser pointers make the beam itself invisible in a reasonably clean atmosphere, showing a point of light when striking an opaque surface. Some higher powered laser pointers project a visible ... of infrared IR diode laser modules of up to 1000 mW 1 watt output has created a generation of IR pumped frequency doubled DPSS laser pointers in green, blue, and violet, of extremely high visible ... heat which is difficult to dissipate in a pocket laser pointer package, it is often left ... in these devices. Types of laser pointer File Laser beam.jpg thumb Laser beams 650nm, 532nm, 405nm File Laser spot.jpg thumb Laser spots 650nm, 532nm, 405nm The early laser pointers were Helium neon laser helium neon HeNe gas lasers and generated laser radiation at 633 nanometer nm , usually designed to produce a laser beam with an output power no greater than 1 milliwatt mW . The least expensive laser pointers use a deep red laser diode near the 670 650 nanometers nm wavelength . Slightly more ... are possible too, with the 532 nm green laser being the most common alternative. In the past few years, yellow orange laser pointers, at 593.5 nm, have been made available. In September 2005, handheld blue laser pointers at 473 nm have also become available. In early 2010 ref http www.dinodirect.com 50mw 405nm mid open blue violet laser pointer stars kaleidoscopic laser pen 2 aaa included.html Example of a true GaN diode laser pointer ref Blu ray actually violet laser pointers at 405 ... more details
The Vulcan laser is an 8 beam 2.5 kJ per 2 nanosecond pulse infrared neodymium Neodymium glass neodymium glass laser at the Rutherford Appleton Laboratory s Central Laser Facility in Oxfordshire , England . Vulcan is also capable of operating in frequency doubled mode where it can deliver about 1 kJ to a target at 532 nm in 2 ns pulses. One of Vulcan s beams is also available as an ultra short pulse 700 Joules in 700 femtosecond ultra high intensity beam using chirped pulse amplification called the Vulcan petawatt . Main uses for Vulcan and Vulcan petawatt are the investigation of high intensity light matter coupling experiments and inertial confinement fusion experiments including the investigation of the fast ignition scheme of target implosion. In 2005 the Vulcan laser was the highest intensity focused laser in the world, capable of producing a Petawatt laser beam with a focused intensity of 10 sup 21 sup watts per cm sup 2 sup . ref http www.clf.rl.ac.uk news CLF News Archive vulcangbowr2005.htm VULCAN in the Guinness Book of World Records for Second Year Running CLF, Laser website ref See also Laser List of laser types External links http www.clf.rl.ac.uk Mission Strategy.htm Vulcan and other lasers at the CCLRC http www.clf.rl.ac.uk Facilities Vulcan 12248.aspx Vulcan laser References references fusion experiments Category Inertial confinement fusion research lasers Category Science and technology in the United Kingdom ... more details
Science News date accessdate 2010 09 07 ref References wikinews Yale University builds world s first anti laser reflist Category Fiber optics Category Photonics Category Fiber optic communications Switch, optical Category Laserscience optics stub physics stub ar es Antil ser ru ...About a device which absorbs light waves the device used to defeat LIDAR Laser jammer orphan date September 2010 Expert subject date March 2011 A coherent perfect absorber CPA , or anti laser , is a mechanism for absorption of photon coherent light particles along specific wavelength s the inverse of a laser . ref http www.wired.com wiredscience 2011 02 real live antilaser ref ref http esciencenews.com ... antilaser traps all incoming light.html title Anti laser traps all incoming light physics math 02 ... a laser and an anti laser in a single device. ref cite journal author Stefano Longhi title PT symmetric laser absorber journal Physical Review volume A82 year 2010 pages 031801 doi 10.1103 PhysRevA.82.031801 ... anti laser. ref cite web url http www.bbc.co.uk news technology 12453893 title Scientists build the world s first anti laser publisher BBC date 2011 02 17 accessdate 2011 02 17 ref For the moment ... computing behold the worlds first anti laser Behold, the world s first anti laser ref Design Identical ... . This method substitutes the Active laser medium gain medium of a laser with a material which exhibits ... wiredscience 2010 07 antilaser title Physicists Dream Up the Antilaser & 124 Wired Science ... 80beats 2010 08 04 anti laser would absorb the light a laser shoots out title Anti Laser Would Absorb the Light a Laser Shoots out & 124 80beats & 124 Discover Magazine publisher Blogs.discovermagazine.com date accessdate 2010 09 07 ref ref cite web url http www.itwire.com science news energy 40990 theorists says anti laser is possible title Theorists says anti laser is possible publisher ... 2010 07 31 quick link the anti laser title Quick link the anti laser Letters to Nature publisher ... more details
Meanings of Laser Class Laser dinghy a class of sail boat Laser safety classification of laser products concerning safety hazards disambig ... more details
Fictional Science Fiction Ground Vehicles name Laser Tank image Lasertank2.JPG caption Eagle Laser Tank first The Infernal Machine last Space Warp affiliation Earth maxspeed 10 15 mph armaments Laser cannon defense powerplant chassis Tracked power weight length width height primeref The Laser Tank is a fictional vehicle seen in List of Space 1999 episodes The Infernal Machine The Infernal Machine episode of the television series Space 1999 . Defense Capabilities These vehicles are not one particular design, and in fact, the three tanks seen all look different although they do seem to share a common chassis. Their armament is similar though, with each being armed with a single rotating laser cannon. ref name desc http www.space1999.net catacombs main pguide wrefamg.html Description of the Laser tanks and their background ref gallery Image Lastertank1.JPG Flat Bed Laser Tank Image Lasertank3.JPG Domed Laser Tank gallery These vehicles can be manned or operated by remote control ref name desc and were probably the product of a conversion of construction vehicles that were still present on the Moonbase at the time of Breakaway Space 1999 Breakaway . ref name desc Moonbase Alpha only had to use their Laser Tanks in combat once, against the artificial intelligence known as Gwent. All three tanks were destroyed, although other tanks were seen in an Eagle hangar in List of Space 1999 episodes Space Warp . Fortunately during the battle with Gwent, the tanks had been operated by remote control. ref Space 1999 episode The Infernal Machine final shooting script. ref Design The Laser Tanks were designed by Martin Bower , who was responsible for the design of much of the hardware seen in the show. The chassis were from Tamiya 1 25th scale Chieftain tank s and were the one common feature to all the vehicles. Each one was motorized and remote controlled. References Reflist External links ... Space 1999 Catacombs Laser Tanks In depth review of the laser tanks Space 1999 Category 1976 ... more details
Refimprove date June 2008 Cleanup date November 2008 Image Cyclops laser 1975.jpg thumb right 300px The single beam Cyclops laser at LLNL around the time of its completion in 1975. Cyclops was a high power laser built at the Lawrence Livermore National Laboratory LLNL in 1975. It was the second laser constructed in the lab s Laser program, which aimed to study inertial confinement fusion ICF . ref Citation title Laser Programs the First 25 Years...1972 1997 url https lasers.llnl.gov science technology ... laser and the single beam version of the two beamed Janus laser , also completed in 1975. The main scientific aims of its construction were for the study of nonlinear focusing effects in high power laser ... techniques which would be used on subsequent higher powered lasers such as the argus laser Argus and Shiva laser s and for inertial confinement fusion ICF research. Background Even the earliest ICF laser experiments demonstrated that one of the main problems which needed to be addressed was poor focusing ... easily exceed the optical damage threshold of laser glass and other optics, severely damaging them ..., some way of further improving the beam smoothness of the laser needed to be studied. The simplest ... are, in effect, small inverted telescopes inserted in the laser beam to focus the light through ... long, thereby maximizing the distance the filaments moved from the centerline. Such a laser had not previously been built, the earlier Janus laser, which explored the Nd glass laser itself, was only a few meters long. It was precisely the problems of building a long laser that Cyclops was built to study ... filtering technique, leading to ever growing laser beamlines on the order of 100 m today. While Cyclops was still under construction, another LLNL laser was being built that also incorporated the spatial filtering technique, Argus laser Argus . Argus passed its light through a series of amplifiers ... also Laser Lawrence Livermore National Laboratory List of laser types References Reflist External links ... more details
Science. Maiman s original laser was fired at a projector screen in a darkened room. In the center ...Image Ruby laser.jpg thumb right Diagram of the first ruby laser. A ruby laser is a solid state laser that uses a synthetic ruby crystal as its active laser medium gain medium . The first working laser was a ruby laser made by Theodore Maiman Theodore H. Ted Maiman at Hughes Research Laboratories on May ... 494. ref ref cite web title Laser inventor Maiman dies tribute to be held on anniversary of first laser publisher Laser Focus World date 2007 05 09 url http www.laserfocusworld.com display article 292149 12 none none INDUS Laser inventor Maiman dies tribute to be held on anniversary of first lase ... nanometer nm , which is a deep red color. Typical ruby laser pulse lengths are on the order of a millisecond . Design Image Ruby laser rod and view through.JPG thumb right upright A ruby laser rod. Inset The view through the rod is crystal clear seealso Laser construction A ruby laser most often consists of a ruby rod that must be laser pumping pumped with very high energy, usually from a flashtube ... laser is a Population inversion Three level lasers three level solid state laser . The active laser medium laser gain Amplifier amplification medium is a synthetic ruby rod that is energized through ... Silfvast Laser Fundamentals by William Thomas Silfvast Cambridge University Press 1996 Page 547 549 ... is the wavelength of the ruby laser. Ruby also absorbs some of the light at its lasing wavelength. To overcome ... One of the first applications for the ruby laser was in rangefinding. By 1964, ruby lasers with rotating ... Koechner Solid State Laser Engineering by Walter Koechner Springer Verlag 1965, page 2. ref The ruby laser was the first laser used to optically pump tunable dye laser s and is particularly well suited to excite laser dyes emitting in the near infrared. ref cite book title Dye Laser Principles first ... coherence length, the red 694 nm laser light is preferred to the 532 nm green light of frequency ... more details
Wiktionary laser A laser is a device which generates a coherent beam of light. Laser may also refer to Transportation Laser sailboat Ford Laser , a compact car sold outside the United States from 1980 2003 Chrysler Laser , a hatchback car sold from 1985 1986 Plymouth Laser , a sports coupe sold from 1989 1994 LASER Airlines Computing MPEG 4 Part 20 , a rich media standard VTech Laser 200 , an 8 bit home computer Laser 128 , a clone of the Apple II home computer Other uses Laser debit card , the primary debit card system used in Ireland. Laser roller coaster Lasers album Lasers album , by Lupe Fiasco Silphium , an extinct plant, of the genus Ferula , which produced a resin also called laserLaser genus , a plant genus of the family Apiaceae Dieter Laser , German actor See also Atom laser Lazar disambiguation Lazer disambiguation disambig da Laser flertydig de Laser Begriffskl rung fr Laser homonymie ko it Laser disambigua he nl Laser ja pl Laser ujednoznacznienie ru fi Laser t smennyssivu sv Laser olika betydelser ... more details
Laser M gajoule LMJ is an experimental inertial confinement fusion ICF device being built near Bordeaux , in France by the French nuclear science directorate, Commissariat l nergie Atomique CEA . Laser M gajoule plans to deliver about 1.8 MJ of laser energy to its targets, making it about as powerful as its US counterpart, the National Ignition Facility NIF . Laser M gajoule is the largest ICF experiment to be built outside the US, where ICF research has been strongly related to nuclear weapon s research. Likewise, one of Laser M gajoule s primary tasks will be refining Nuclear fusion fusion calculations for France s own nuclear weapons industry. Laser M gajoule uses a series of 240 laser beamlines, grouped into eight groups of 30. Each beamline contains two main glass amplifiers, which are optical pumping optically pumped using Flashtube Applications xenon flashlamps . A feeder laser beam is fed via optical fiber into each of the beamlines where it travels through the two amplifiers. In order to extract more power from the amplifiers, which are not particularly efficient in transmitting power to the beam, the laser pulse is sent through the amplifiers twice by an optical switch ... the laser light is used to heat a high Z cylinder made of some heavy metal often gold known as a hohlraum ... a deuterium tritium DT fusion fuel. Although considerable laser energy is lost to heating the hohlraum ... of fusion researchers. Construction on the Laser M gajoule started with a single set of eight beamlines known as the Ligne d Integration LaserLaser Integration Line , or LIL , powered by a 450 MJ energy ... first Michael title France banking on laser research publisher Facts & Arts date 2008 11 07 url http www.factsandarts.com articles france banking on laser research accessdate 2009 06 20 ref References ... lmj.cea.fr html cea.htm Laser M gajoule in French language French fusion experiments DEFAULTSORT Laser Megajoule Category Inertial confinement fusion research lasers es Laser Megajoule fr Laser M gajoule ... more details
Orphan date February 2009 Image Linelaser.jpg thumb 220px right A line laser is a laser with an Optics optic , to generate a laser line instead of a point e.g. laser pointer . Different types of optics generate different patterns. Usage 3D scanner laser scanning laser line level laser level surveying DEFAULTSORT Line Laser Category Surveying Category Laser image generation de Linienlaser ... more details
Image Diode laser.jpg thumb right 250px A packaged laser diode with penny for scale. Image Laser diode chip.jpg thumb right 250px Image of the actual laser diode chip shown on the eye of a needle for scale contained within the package shown in the above image. Image Laser diode close up.jpg thumb right 250px This is a visible light micrograph of a laser diode taken from a CD ROM drive. Visible are the P ... a broken Collimator collimating lens . The laser diode is a laser where the active medium is a semiconductor similar to that found in a light emitting diode . The most common type of laser diode is formed ... referred to as injection laser diodes to distinguish them from optically pumped laser diodes. Theory of operation A laser diode is formed by doping semiconductors doping a very thin layer on the surface ... type semiconductor p type region, one above the other, resulting in a p n junction, or diode . Laser ... electrical bias across the laser diode causes the two species of charge carrier electron hole holes ... lasers, or injection laser diode ILD . As diode lasers are semiconductor devices, they may also be classified ... laser s. Another method of powering some diode lasers is the use of optical pumping. Optically Pumped Semiconductor Lasers OPSL use a III V semiconductor chip as the gain media, and another laser often another diode laser as the pump source. OPSL offer several advantages over ILDs, particularly in wavelength ... to enter scientific pump laser market.QP129867.dcmp rss.page 1.html M. Arrigoni, et. al., Optically Pumped Semiconductor Lasers Green OPSLs poised to enter scientific pump laser market , OptoIQ 2009 . ref ref http www.repairfaq.org sam laserdio.htm dioopsl Optically Pumped Semiconductor Laser OPSL , Sam s Laser FAQs. ref When an electron and a hole are present in the same region, they may recombination ... vibrations, rather than as photons. Spontaneous emission gives the laser diode below lasing threshold similar properties to an LED . Spontaneous emission is necessary to initiate laser oscillation, but it is one ... more details
Soldiers of the 2nd Foreign Infantry Regiment 2 sup e sup REI training with laser tag equipment union International Laser Tag Association nickname first 1984 registered club contact No physical contact ... of play recreational or professional mgender category Indoor or Outdoor ball Laser guns and targets worn by players Laser tag is a team or individual activity where players attempt to score points by tagging ... Dead link date January 2011 ref laser tag has evolved into both indoor and outdoor styles of play ... tactical configurations and precise game goals. Laser tag is popular with a wide range of ages. When compared to paintball , laser tag is painless because it uses no physical projectiles, and indoor ... infrared beams for Combat combat training . The MILES system functions like laser tag in that beams ... Integrated Laser Engagement System , the Federation of American Scientists Military Analysis Network ... s Laser Tag History Page , a historical reference to consumer laser tag product from a toy ... by the 1984 opening of Star Laser Force in Houston, TX, which was designed by Lee Weinstein, who had ... Laser Force system in 1984, Weinstein found that shortly after World War II , a patent had been issued ..., it was never commercially produced. In Star Laser Force, the players guns contained a xenon ... Laser Force, and that led to Worlds of Wonder adopting the general design of Star Laser Force for their Laser ... in 1989, as the fad of the games wore off. Today there are laser tag arenas all over the world ... and professional grade equipment for outdoor laser tag arenas and businesses. ref name iltahistory http www.lasertag.org general history.html History of Laser Tag , International Laser Tag Association, accessed 17 September 2006 ref Laser Quest is privately owned and operated by Versent Corporation ULC, with the corporate office based in Mississauga, Ontario, Canada. The first Laser Quest in North America opened in 1993, and there are currently 58 Laser Quest locations in operation in Canada and the United ... more details
Category Optics Category Laser types Category Laserscience ar ...A random laser is a laser that uses a highly disordered gain media. A random laser uses no optical cavity but the remaining principles of operation remain the same as for a conventional laser . Random laser action has been observed in many different media, including semiconductor powder, nanostructured and non nanostructured thin films , Dye laserlaser dyes , ceramics and many more. Developments in nanoparticles have demonstrated large amounts of optical scattering can occur when photons are incident. In this way, light can be diffused around a medium in much the same way as it is on white paint and in clouds . Incoherent regime If nano particles are embedded in an optical gain medium, for example, zinc oxide Ultraviolet UV emission bandgap 3.3 eV , light from a pump source e.g. frequency tripled Nd YAG laser will induce spontaneous emission of light at around 350 nm within the gain medium . These spontaneously emitted photons will then stimulate other radiative transitions in the gain medium to take place, unleashing yet more photons. This is, in many ways analogous to the chain reaction that occurs in the fission of neutrons in a nuclear reactor and has been referred to by R.H. Dicke as an optical bomb . ref http www.rp photonics.com superradiance.html Encyclopedia of Laser Physics and Technology Superradiance ref Anderson localization Anderson localization is a well understood phenomenon which occurs when electrons become trapped in a metal and this metal goes through a phase transition from Electrical conductor conductor to insulator . ref http prola.aps.org abstract ... emission to occur. As in an ordinary laser, if the gain is greater than the losses incurred .... This is in contrast to producing an ordinary laser crystal at temperatures exceeding 700 C. Due to the multidirectional emission of a random laser, there is potential in producing display technology ... more details
morefootnotes date February 2008 Infobox VG title Laser Squad image File lasersquadboxart.jpg 250px caption European Amstrad CPC cover art for Laser Squad developer Mythos Games Target Games publisher ... player platforms Amiga , Amstrad CPC , Atari ST , Commodore 64 , MS DOS , MSX , ZX Spectrum Laser ... of the game can be seen in other titles like the X COM series and Laser Squad Nemesis . Gameplay Laser ... the device. Laser Platoon A free for all deathmatch as equal teams are pitted against each other ... VG HIT . Reviewer, Tony Dillon, stating that Laser Squad is one of the hottest games I ve ever played ... Rebelstar and Laser Squad are among the earliest examples of turn based unit level computer wargames ... Lords of Chaos , which had many similarities to Laser Squad but was set in a fantasy genre of wizards ... video game Chaos . Many of the Laser Squad mechanics were re used in the later X COM series of games ... of a larger campaign and storyline, unlike the Laser Squad scenarios which were largely self contained ..., energy, grenade and hand to hand combat weapons. More recently, the Laser Squad franchise has been revived by Codo Technologies with both the play by email game Laser Squad Nemesis although this departs ... for characters and organizations in the games of Mythos and Codo are a thread connecting all the Laser ... manufacturer Marsec Mars Security . Screenshots gallery Image ZX Laser Squad.png ZX Spectrum Image ... Image LaserSquadst.jpg Atari ST Image lasersquadpc.jpg IBM PC gallery See also Laser Squad Nemesis X COM Series References references External links http www.laser squad.co.uk Laser Squad Retro Laser Squad fan site including new mission downloads http laser.detstwo.com Play Laser Squad online Fan site about Laser Squad where you can play directly in browser Java is not required moby game id laser squad name Laser Squad http www.lasersquadnemesis.com Laser Squad Nemesis homepage WoS game id 0002813 http www.lasersquad.org Java Remake of the Spectrum version of Laser Squad, also a scenario editor ... more details
Unreferenced stub auto yes date December 2009 Laser guidance is a technique of guiding a missile or other projectile or vehicle to a target by means of a laser beam. Some laser guided systems utilise beam riding guidance, but most operate more similarly to semi active radar homing SARH . This technique is sometimes called SALH , for Semi Active Laser Homing . With this technique, a laser is kept pointed at the target and the laser radiation bounces off the target and is scattered in all directions this is known as painting the target , or laser painting . The missile, bomb, etc. is launched or dropped somewhere near the target. When it is close enough for some of the reflected laser energy from the target to reach it, a laser seeker detects which direction this energy is coming from and adjusts the projectile trajectory towards the source. While the projectile is in the general area and the laser is kept aimed at the target, the projectile should be guided accurately to the target. Note that laser guidance is not useful against targets that do not reflect much laser energy, including those coated in special paint which absorbs laser energy. This is likely to be widely used by advanced military vehicles in order to make it harder to use laser rangefinder s against them and harder to hit them with laser guided munitions. An obvious circumvention would be to aim the laser merely close to the target. Countermeasures to laser guidance are Laser warning receiver Laser detection systems , Smoke screen , active anti laser active protection systems. See also Laser guided bomb Missile types DEFAULTSORT Laser Guidance Category Missile guidance Missile stub id Pemandu laser it Missile a guida laser ja ... more details
A fiber laser or fibre laser is a laser in which the active gain medium is an optical fiber doped with rare ... media for a fiber laser. Applications Applications of fiber lasers include laser ablation material processing ... 7 Fiber laser overview and medical applications title http www.opticsjournal.com tla.htm Tunable Laser Applications editor1 first F. J. editor1 last Duarte editor1 link F. J. Duarte edition 2nd publisher ... it to be easily delivered to a movable focusing element. This is important for laser cutting, welding ... beam. Compact size Fiber lasers are compact compared to solid state laser rod or gas laser s of comparable ... and manufacture See also Laser construction Unlike most other types of lasers, the laser cavity in fiber ... type is the single longitudinal mode operation of ultra narrow Distributed feedback laser distributed ... are laser pumping pumped by semiconductor laser diode s or by other fiber lasers. Double clad fibers ... issue pages 331 335 year 1993 url http www.sciencedirect.com science? ob ArticleURL& udi B6TVF 46JGTGD ... K. Ueda url http www.sciencedirect.com science? ob ArticleURL& udi B6TVF 497C4YV BW& user 10& coverDate ... thumb 10,000W SM Laser Recent developments in fiber laser technology have led to a rapid and large rise in achieved diffraction limited beam powers from diode pumped solid state laser s. Due to the introduction ... with commercially available off the shelf fibers and components. As a result, fiber laser technology ... saturable absorption to achieve the passive mode locking in a fiber laser. Once a mode locked ... and consequently the ultrashort soliton operation is obtained in the laser. Soliton operation is almost .... Semiconductor saturable absorber mirrors Semiconductor saturable absorbers were used for laser mode locking as early as 1974 when p type germanium is used to mode lock a CO2 laser which generated ... in a birefringent cavity fiber laser , Opt. Lett., 33, 2317&ndash 2319. 2008 . ref ref http www3.ntu.edu.sg ... solitons in a fiber laser , Physical Review Letters , 101, 153904 2008 . ref ref http www.batop.com ... more details
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