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Fabry-Perot |
Also found in: Acronyms | 0.04 sec. |
Fabry-PerotAn optical structure containing a pair of mirrors at opposite ends of a cavity. Light reflects back and forth between the mirrors, and one or both transmit a fraction of the resonant frequency. The resonance is created by making the distance of one round trip between mirrors equal to an integral number of wavelengths of the cavity material. Optically speaking, this is an interferometer, because it relies on the interference of light for its operation. A Fabry-Perot device becomes a light generator when a laser medium is used in the cavity, otherwise it is a passive filter. See distributed feedback laser and etalon. |
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| Using the split-cylinder, split-post, and Fabry-Perot resonator methods, NIST scientists characterized substrates over a frequency range of 1 GHz to 60 GHz. The astronomers embarked on their odyssey using a special instrument, a Fabry-Perot interferometer. The wide operating range of the VSC7981 enables it to be used with either Distributed FeedBack (DFB) lasers or Fabry-Perot (FP) lasers. |
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