Etalon

Origin

From French étalon ("measuring gauge, standard").

Full definition of etalon

Noun

1. An optical device containing parallel mirrors, used in laser design to delay light.
• 2004, S. C. Gupta, Textbook On Optical Fiber Communication And Its Applications, page 153,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.
• 2006, Walter Koechner, Solid-State Laser Engineering, page 264,The laser output will be composed of longitudinal modes that fall inside the transmission band of the etalon, hence a narrowing of the laser line width is observed.
• 2009, V. Rajendran, Engineering Physics, page 7.15,The next step of this experiment is to compare the etalon m₁m₂ (shortest length) with the etalon m

Synonyms

• Fabry-Pérot interferometer

Anagrams

• lean-to