feedback laser

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• Distributed feedback laser — A distributed feedback laser (DFB) is a type of laser diode, quantum cascade laser or optical fibre laser where the active region of the device is periodically structured as a diffraction grating. The structure builds a one dimensional… …   Wikipedia

• Distributet-Feedback-Laser — Distributed Feedback Laser, kurz DFB Laser, sind Laserdioden, in denen das aktive Material periodisch strukturiert ist. Die Strukturen wechselnder Brechzahl bilden ein eindimensionales Interferenzgitter bzw. Interferenzfilter (Bragg Reflektor).… …   Deutsch Wikipedia

• Distributed Feedback Laser — (englisch, dt. Laser mit verteilter Rückkopplung), im Deutschen meist nur DFB Laser genannt, sind Laserdioden, in denen das aktive Material periodisch strukturiert ist. Die Strukturen wechselnder Brechzahl bilden ein eindimensionales… …   Deutsch Wikipedia

• Laser diode — Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale …   Wikipedia

• Laser acronyms — Here, is a list of acronyms used in laser physics, applications and technology.A*AOM – acousto optic modulator *APD – avalanche photodiode *APM – additive pulse mode locking *ASE – amplified spontaneous emission *AWG – arrayed waveguide… …   Wikipedia

• Laser absorption spectrometry — (LAS) refers to techniques that utilize lasers to assess the concentration or amount of a species in gas phase by absorption spectrometry (AS).It is well known that optical spectroscopic techniques in general and laser based techniques in… …   Wikipedia

• Laser construction — A laser is constructed from three principal parts:*An energy source (usually referred to as the pump or pump source ), *A gain medium or laser medium , and *Two or more mirrors that form an optical resonator . Pump sourceThe pump source is the… …   Wikipedia

• Laser projectors — A laser projector is a collection of lasers, mirrors, galvanometer scanners and other optical components housed in an enclosure. A laser projector can contain one laser light source for single color projection or possibly 3 sources for RGB (red,… …   Wikipedia

• Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment …   Wikipedia

• Laser interstitial thermal therapy — The term laser interstitial thermal therapy (LITT, also referred to as laser induced interstitial thermotherapy or laser induced thermotherapy or interstitial laser therapy) is a surgical procedure in which destruction of soft tissues in the body …   Wikipedia

• Laser turntable — A laser turntable is a phonograph that plays gramophone records using a laser beam as the pickup, rather than a conventional diamond tipped stylus. This playback system has the unique mechanical advantage of never physically touching the record… …   Wikipedia