Gourt > Science > Physics > Optics > Lasers
A laser (from the acronym Light Amplification by Stimulated Emission of Radiation) is an optical source that emits photons in a coherent beam. The back-formed verb to lase means "to produce laser light" or possibly "to apply laser light to".
Laser light is typically near-monochromatic, i.e. consisting of a single wavelength or color, and emitted in a narrow beam. This is in contrast to common light sources, such as the incandescent light bulb, which emit incoherent photons in almost all directions, usually over a wide spectrum of wavelengths.
Laser action is explained by the theories of quantum mechanics and thermodynamics. Many materials have been found to have the required characteristics to form the laser gain medium needed to power a laser, and these have led to the invention of many types of lasers with different characteristics suitable for different applications.
More on [ Laser ]
RT @vatozod: As long as he held the auxiliary trigger down in quad mode, the lasers would produce a cloud of shots that wouldn't do much damage, but wer
molasuzozyqy (furlough) Wed, 16 May 2012 17:04:21 -0000
RT @vatozod: As long as he held the auxiliary trigger down in quad mode, the lasers would produce a cloud of shots that wouldn't do much damage, but wer
@DraCintiaCunha Oferecemos nossos lasers estéticos especializados para facial, corpo e laser-terapÃa (11) 2065.2880 raul@modella.com.br
EsteticFace (quasaresthetique) Wed, 16 May 2012 17:03:04 -0000
@DraCintiaCunha Oferecemos nossos lasers estéticos especializados para facial, corpo e laser-terapía (11) 2065.2880 raul@modella.com.br
Just picked up these beauties from danger!awesome lasers. One for each of us! @izolaNYC http://t.co/3QWuqw1T
AlexandraPhoto (Alexandra Roberts) Wed, 16 May 2012 17:02:27 -0000
Just picked up these beauties from danger!awesome lasers. One for each of us! @izolaNYC http://t.co/3QWuqw1T
Russia develops air defence lasers http://t.co/qgD2yQtZ
vajra_yudha (Vajra) Wed, 16 May 2012 17:02:05 -0000
Russia develops air defence lasers http://t.co/qgD2yQtZ
Didn't hate Lasers but I would definitely not show it much love
DatNigKels (Wynton Tarantino ) Wed, 16 May 2012 17:01:33 -0000
Didn't hate Lasers but I would definitely not show it much love
FAA wants stiffest penalties for lasers pointed at pilots: FAA investigators and attorneys are now being told that... http://t.co/TNYyLeM0
breakingseanews (Breaking SEA News) Wed, 16 May 2012 17:01:13 -0000
FAA wants stiffest penalties for lasers pointed at pilots: FAA investigators and attorneys are now being told that... http://t.co/TNYyLeM0
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Association of Industrial Laser Users (AILU) - An independent non-profit making organisation that serves the needs and interests of the industrial laser community and helps people make the most of laser technology.
Meta Description: [ Association of Industrial Laser Users is the UK's leading organisation serving the needs and interests of the industrial laser community and helps laser users make the most of laser technology. The organisation has members from both large and small manufacturing organisations, Job Shops, service ... ]
Atomic and Laser Physics, University of Amsterdam - A high-quality page of the research, meetings and people involved with University of Amsterdam's Atomic and Laser Physics Group. Links to research documents in PDF (English).
Meta Description: [ Homepage of the group Quantum Gases-Atom Optics, based at the Van der Waals-Zeeman Institute of the Faculty of Science of the University of Amsterdam. ]
Cambridge University Press Journals - Laser and Particle Beams - An international journal which deals with the physics of intense laser and particle beams, the interaction of these beams with matter, and their applications. You can subscribe to the online journal or purchase specific articles.
Center for Ultrafast Optical Science - Located at the University of Michigan. Cutting edge information on current research and development in the field of ultrafast laser technology.
Eurotechnology: Blue Laser - Slide show and other information about gallium nitride blue light emitters and lasers.
Meta Description: [ The Blue Laser Diode -
Gallium Nitride Based Light Emitters and Lasers, enginering and management issues ]
Excimer Lasers - Short description, links to Amazon books and patents.
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Fundamental aspects of laser-matter interaction - A series of Russian essays (in English) documenting laser effects on matter.
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Handbook on Industrial Laser Safety - considers questions of laser safety. It contains also technical information necessary for any laser user.
Holograte, JSC - Offers holograms, holographic stikers, hot stamping foils, laminates, diffraction gratings: concave, convex, with aberration correction, plane, for pulse laser comprsseion, scale measurement and spectral devices.
Meta Description: [ Группа компаний Хологрэйт - производство и продажа голограмм, голографических материалов и дифракционных решеток ]
How Stuff Works: Laser - Seven-part illustrated tutorial about what a laser is, with many related links.
Meta Description: [ Lasers are used in CD players, dental drills, eye surgery, and even tattoo removal. But what exactly is a laser? Learn about the various types of lasers and how they generate such concentrated light. ]
IEEE LEOS - IEEE Lasers and Electro-Optics Society
Meta Description: [ LEOS Portal Home pages featuring: What's New at LEOS, Publication News, Call for Papers, Quick Links, Headline News, Technology and Industry News, Conference Alerts, Upcoming Conferences & Workshops ]
Institute for Laser Science (ILS) - Researches on Lasers, Atom optics, Physics of Highly Charged Ions. ILS is attached to the University of Electro-Communications in Tokyo, Japan.
Meta Description: [ Researches on Lasers, Atom optics, Physics of Highly Charged Ions. ILS is attached to the University of Electro-Communications in Tokyo, Japan. ]
Laser Engineering at the University of Liverpool - Resource for laser engineering which includes: information on laser activities at Liverpool, courses in lasers, directory of laser practitioners, events, jobs, books for purchase, news, online research resources, information on Lairdside Laser Engineering Centre.
Meta Description: [ Access information and resources on the laser in engineering and manufacture, including cutting, welding, new applications of lasers ]
Laser FAQ - contains information regarding laser terminology, construction and principles. There are a lot of links to laser physics sites.
Laser Focus World - Optoelectronics Technology - Magazine of optoelectronic technologies, industrial lasers, detectors, imaging devices, fiberoptic components, and instrumentation advancements for optoelectronic professionals.
Meta Description: [ Laser Magazine provides laser information and photonics industry coverage: Optics, lasers, fiber optics, imaging, photonics + laser trends for photonics engineers, and researchers. Articles cover lasers and laser applications, optics, photonics technology, photovoltaic technology and laser trends... ]
Laser Science Research Laboratory (LSRL) - Korea Advanced Institute of Science and Technology (KAIST); research involving high power lasers and SBS-PCM (Stimulated Brillouin Scattering Phase Conjugation Mirror).
Laser Sensors and Research - A description of research related to applications of lasers in several areas at Old Dominion University.
Meta Description: [ Research, Electrical Engineering, Teaching Assistantships, Doctorate, Graduate Studies, Ph.D., Old Dominion, University, Virginia ]
Laser Systems Laboratory - Researches and develops and various Dye Lasers and Ti:Sapphire Lasers; at Novosibirsk State University.
Meta Description: [ Home Page of the Laser Systems
Laboratory of Novosibirsk State University ]
Laser Systems Ltd. - Laser Systems, Ltd., St. Petersburg, Russia is a developer and exporter of laser equipment. The site reports its activities and achievements in Science and research, design and engineering, information technologies and study and tests of various lasers and laser systems.
Lasers and Optics Index - Links to the web pages of research groups in the field of lasers and optics in the UK, Ireland and the USA.
Meta Description: [ Research in lasers and optics in the UK, Ireland and the USA. ]
National Centre for Laser Applications - The National Centre for Laser Applications (NCLA) conducts research development of laser materials processing. Research areas of interest include micromachining, cutting, marking, welding, and surface modifcation.
Meta Description: [ A research centre specialising in the development and promotion of industrial laser applications. ]
OAG Laboratories, Inc. - Scientific consulting services in laser micromachining technologies for micro and nano fabrication of devices for biomedical, MEMS, display, erospace, microelectronics, and semiconductor industries.
Meta Description: [ dog kennel pet supply puppy insurance medication collar petmeds clothes ]
Optical Trapping Group - University of St. Andrews - Main activities involve using laser light to manipulate both atoms and microscopic particles. Other work involves the development of diode lasers for spectroscopy and the study of novel light beams.
Meta Description: [ The homepage of the Optical Trapping group at St. Andrews University. We are located in the physics department and undertake studies in a number of areas including optical tweezers and manipulation, cold atoms and novel laser beams ]
Photonics Jobs - Job listings and resumes in fields of lasers, optics and photonics.
Meta Description: [ Photonics Jobs, optics jobs, laser jobs, optical engineer and laser engineer employment ]
Research works on infrared laser sensing - this site is devoted to the research in the field of laser sensing and deals with infrared heterodyne spectroscopy, tunable semiconductor laser sources in the middle infrared and their uses in molecular detection.
Meta Description: [ Personal homepage devoted to my works in infrared laser sensing ]
Sargent Research Group - University of Toronto; research in semiconductor lasers, self-organized optical structures, novel light-emitting materials, and new optical networks.
The Laser and Fiber Optic Revolution - This article describes the conception and development of both laser technology and the fibers that allow transmission of a light signal over long distances.
The Laser, Optics and Holography Ring - Professional and hobbyist sites primarily about lasers and their uses.
Meta Description: [ The Laser, Optics and Holography webring brings together the resources of these wonderful devices, and their applications. Some of the sites which will feature on this ring, will provided invaluable i ]
Ultraviolet Laser at DESY - A free electron laser has reached wavelength of 93 nm. From Physics News Update.
Meta Description: [ A portion of Number 473 ]
Web Science Resources' Laser Tutorial - A brief introduction to laser operation written for those who have little or no knowledge of lasers. Each page builds on the concepts of the previous page and features color illustrations, some of them animated.
Meta Description: [ An illustrated five part tutorial that describes how lasers work. ]
What is laser? - Fact-Index dictionary can tell you everything about it. It contains mainly basic information for beginners but still can be useful for professional.
Zeelase Laser Educational Programs - on homepage of this project you find the links to various courses (Short, custom and video) in lasers and laser-related fields.
Meta Description: [ Zeelase Educational Progams - Various courses in lasers and laser-related fields and applications. ]
