etalon

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etalon

Where it comes from

Borrowed from French étalon (“measuring gauge, standard”).

noun etalons

An optical device containing parallel mirrors, used as a narrow band filter, often in laser design. It will be shown that the simple theory outlined in the preceding paragraph, which is applicable to single-plate etalons, can be used to predict the main features of the spectral curve of a multi element etalon.
Similar: Fabry-Pérot interferometer

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MLA

"etalon." Wiktionary, via Micwyn, micwyn.com/word/etalon. Accessed 6 Nov. 2026.

APA

etalon. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/etalon

Chicago

"etalon." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/etalon.

BibTeX

@misc{etalon_2026,
  title = {etalon},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/etalon},
  urldate = {2026-11-06}
}