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Updated: Jun 17, 2026

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
Published on: February 3, 2023
Analytical description of a Fabry-Perot photoelectric spectrometer
1Air Force Cambridge Research Laboratories,Bedford, Massachusetts 01730, USA.
Abstract:
An analytical expression for the response of a complete Fabry-Perot photoelectric spectrometer to a line profile is derived. The case of a doppler-broadened Lorentzian profile examined by a spectrometer comprised of an etalon of variable thickness and reflectivity, with surface defects consisting of spherical curvature, as well as microscopic flatness imperfections, a finite exploring slit in front of the photodetector, and bandwidth limiting circuits is considered. Some of the properties and uses of the expression obtained are discussed.
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