Construct · 1 fields · 1 citations

etalon: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone optics construct Nearest construct by meaning·not indexed
etalon1 CONSTRUCTFabry-Perot etalonFABRY-PEROT · 1899

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Optics

Two mirrors that pass only sharp, evenly spaced colours

In optics, an etalon is a pair of flat, parallel, partially reflecting surfaces separated by a fixed gap, so that light bounces many times between them and only wavelengths that interfere constructively over a round trip are transmitted, producing a comb of very sharp, evenly spaced transmission peaks. Perot and Fabry's 1899 On the application of interference phenomena to the solution of various problems of spectroscopy and metrology introduced the multiple-beam device and its use for high-resolution spectroscopy and precise length measurement. The referent is a multiple-beam interference cavity, characterised by its free spectral range and finesse, and it underlies spectrometers, laser cavities, and wavelength filters.[1]

Unit
The transmission comb set by the mirror spacing: free spectral range and finesse
Recovery means
Not applicable
Measured by
Characterised by the free spectral range from the mirror separation and by the finesse, which sets the sharpness of the transmission peaks

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Nearby constructs

interference4 fields · 5 citationsjingle · one word, four unrelated constructsmeasurement3 fields · 5 citationsjingle · one word, three constructs

References

  1. Perot, A., & Fabry, C. (1899). On the application of interference phenomena to the solution of various problems of spectroscopy and metrology. The Astrophysical Journal, 9, 87. https://doi.org/10.1086/140557

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