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Appl Opt. 1969 Mar 1;8(3):569-74. doi: 10.1364/AO.8.000569.

Aberrations of fabry-perot interferometers when used as filters.

Abstract

The spectral and optical performances of Fabry-Perot interferometers having nonuniformities in spacing are discussed, and it is shown that the finesse F of an interferometer with a circular aperture and a parabolic nonuniformity in spacing and that of one with a rectangular aperture and a linear nonuniformity (lack of parallelism) are both given by F = pi {[ (1 - R)(2)/R] + [2pixi/lambda](2)}(-(1/2)), where xi is the maximum nonuniformity across the aperture and R is the plate reflectance. It is also shown that the nonuniformities impair the spectral performance more than the optical, particularly with incident white light.

PMID:
20072260
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