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Appl Opt. 1967 Oct 1;6(10):1659-63. doi: 10.1364/AO.6.001659.

A moiré fringe method of Fabry-Perot spectrometer scanning.

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  • 1Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon.

Abstract

An aperture system is described which executes a spectral scan for a Fabry-Perot spectrometer. Overlapping Fabry-Perot patterns produce straight-line moiré fringes; hence, a linear ruling placed over a Fabry-Perot pattern generates a second, displaced Fabry-Perot pattern, consisting of segments of the rings of the first pattern. The segmented rings expand or contract as the ruling is moved past the mask. The result is a wavelength scan, and the system can therefore be used as a Fabry-Perot spectrometer. The theory is developed, the results of a preliminary application described, and an indication of some possible applications given.

PMID:
20062284
[PubMed]
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