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Fabry–Pérot interferometer Syllabification: Fa·bry–Pé·rot in·ter·fe·rom·e·ter
Pronunciation: /fäˌbrēpāˌrō ˌintərfəˈrämədər/

Definition of Fabry–Pérot interferometer in English:


An interferometer that incorporates an etalon, used chiefly in astronomy.
Example sentences
  • In optics, a Fabry-Pérot interferometer or etalon is typically made of a transparent plate with two reflecting surfaces, or two parallel highly reflecting mirrors.
  • The Fabry-Perot interferometer also represents a tool essential to studying lasers.


Early 20th century: named after Charles Fabry (1867–1945) and Alfred Pérot (1863–1925), French physicists.

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