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Proceedings Paper

Low-noise holographic interferometer using photorefractive crystals
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Paper Abstract

The design of a low-noise holographic interferometer applied to the study of diffusely scattering objects, is presented. This system is a dual-beam arrangement used for the reconstruction process, the anisotropic self-diffraction effect in Bi12TiO20 photorefractive crystals (PRC). It is shown both theoretically and experimentally that holographic recording and reconstruction of complex wavefronts in PRCs, is different from the case of a plane wavefront. This fact is taken into account to optimize the setup. The main optimization criterion is the enhancement of the signal-to-noise ratio (SNR) of the interferogram. Our theoretical predictions of SNR dependence on the recording beam intensities ratio, are verified by the experimental results here shown. An experimental approach to optimize a holographic interferometer with PRC is also presented.

Paper Details

Date Published: 1 March 1994
PDF: 11 pages
Proc. SPIE 2004, Interferometry VI: Applications, (1 March 1994); doi: 10.1117/12.172598
Show Author Affiliations
Serguei V. Miridonov, CICESE (Mexico)
Alexei A. Kamshilin, Univ. of Joensuu (Finland)
Diana Tentori-Santa-Cruz, CICESE (United States)

Published in SPIE Proceedings Vol. 2004:
Interferometry VI: Applications
Ryszard J. Pryputniewicz; Gordon M. Brown; Werner P. O. Jueptner, Editor(s)

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