| 释义 |
etalon
e·ta·lon E5230100 (ā′tə-lŏn′, ĕt′ə-)n. A type of interferometer in which incoming light is repeatedly refracted and reflected between two surfaces into multiple beams that are then focused together, causing self-interference of the light.
[French étalon, standard (of weight or a unit of measurement), reference point, etalon (in reference to the fixed widths between the two surfaces in the first such interferometers), from Old French estalon, standard, of Germanic origin; akin to Middle Dutch stael, model, sample.]etalon (ˈɛtəˌlɒn) n (General Physics) physics a device used in spectroscopy to measure wavelengths by interference effects produced by multiple reflections between parallel half-silvered glass or quartz plates[C20: French étalon a fixed standard of weights and measures, from Old French estalon; see also stallion]etalon
etalon[′ed·əl‚än] (optics) Two adjustable parallel mirrors mounted so that either one may serve as one of the mirrors in a Michelson interferometer; used to measure distances in terms of wavelengths of spectral lines. An instrument similar to the Fabry-Pérot interferometer, except that the distance between the plates is fixed. Also known as Fabry-Pérot etalon. etalonIn optical networking, an etalon is a passive filter that uses a Fabry-Perot cavity. See Fabry-Perot. |