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Optical Engineering

Exact calculation of the optical path difference and description of a new birefringent interferometer
Author(s): Stephanie Prunet; Bernard A. Journet; Gerard Fortunato
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Paper Abstract

A new Fourier transform spectrometer is presented. The novelty of this work comes from the interferometer designed with two identical Wollaston prisms. Thus, the interferogram, formed at infinity in the spatial domain, is independent of the size of the source and of its position. In order to know the characteristics of the apparatus and especially its resolution, we propose the complete calculation of the optical path difference introduced by such an interferometer. Then, by associating the birefringent interferometer with a lens and a linear CCD sensor, we realize a spectrometer with a theoretical resolution about 230 cm-1. Finally, an experimental result is presented, proving the feasibility of the system.

Paper Details

Date Published: 1 June 1999
PDF: 8 pages
Opt. Eng. 38(6) doi: 10.1117/1.602139
Published in: Optical Engineering Volume 38, Issue 6
Show Author Affiliations
Stephanie Prunet, Laboratoire d'Electricite, Signaux et Robotique (France)
Bernard A. Journet, Ecole Normale Superieure de Cachan (France)
Gerard Fortunato, LASO/ENS Cachan (France)

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