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distributed-feedback grating

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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

  • Distributed Bragg reflector — A distributed Bragg reflector (DBR) is a reflector used in waveguides, such as optical fibers. It is a structure formed from multiple layers of alternating materials with varying refractive index, or by periodic variation of some characteristic… …   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

  • Volume hologram — Volume holograms are holograms where the thickness of the recording material is much larger than the light wavelength used for recording. In this case diffraction of light from the hologram is possible only as Bragg diffraction, i.e., the light… …   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

  • Fiber laser — A fiber laser or fibre laser is a laser in which the active gain medium is an optical fiber doped with rare earth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, and thulium. They are related to doped fiber amplifiers,… …   Wikipedia

  • Tunable laser — A tunable laser is a laser whose wavelength of operation can be altered in a controlled manner. While all laser gain media allow small shifts in output wavelength, only a few types of lasers allow continuous tuning over a significant wavelength… …   Wikipedia

  • Dmitri Z. Garbuzov — Born October 27, 1940 Sverdlovsk, Russia Died August 20, 2006 Princeton, New Jersey Nationality …   Wikipedia

  • Diodenlaser — thermoelektrisch gekühlter Diodenlaser für Industrieanwendung (u. a. Kunststoff Schweißen), Faserkopplung (schwarzes Kabel unten), optische Leistung 45 Watt (1 Barren) bei einer Wellenlänge von 808 nm, Abmessungen… …   Deutsch Wikipedia

  • Neural correlates of consciousness — The Neuronal Correlates of Consciousness (NCC) constitute the smallest set of neural events and structures sufficient for a given conscious percept or explicit memory. This case involves synchronized action potentials in neocortical pyramidal… …   Wikipedia

  • Neural oscillation — is rhythmic or repetitive neural activity in the central nervous system. Neural tissue can generate oscillatory activity in many ways, driven either by mechanisms localized within individual neurons or by interactions between neurons. In… …   Wikipedia