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Applied Optics

Applied Optics


  • Vol. 16, Iss. 8 — Aug. 1, 1977
  • pp: 2119–2126

Conditions of pressure scanning of a Fabry-Perot interferometer over a wide spectrum range

J. M. Helbert, P. Laforie, and P. Miche  »View Author Affiliations

Applied Optics, Vol. 16, Issue 8, pp. 2119-2126 (1977)

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The association of a Michelson interferometer and a Fabry-Perot etalon enables the control of the displacement of the peaks of Fabry-Perot transmittance by pressure scanning through Michelson fringes counting. Assuming the variations of the refractive index of gas as a function of wavenumber, pressure, and temperature are known, we show that it is perfectly possible to compute the number of fringes to shift in order to position a chosen peak of Fabry-Perot transmittance for any point in the spectrum. These possibilities enable us to build a real spectrometer whose accuracy is better than 0.05 cm−1 in the whole visible range.

© 1977 Optical Society of America

Original Manuscript: November 27, 1976
Published: August 1, 1977

J. M. Helbert, P. Laforie, and P. Miche, "Conditions of pressure scanning of a Fabry-Perot interferometer over a wide spectrum range," Appl. Opt. 16, 2119-2126 (1977)

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