Low-noise holographic interferometer using photorefractive crystals

Serguei V. Miridonov; Alexei A. Kamshilin; Diana Tentori-Santa-Cruz

doi:10.1117/12.172598

1 March 1994 Low-noise holographic interferometer using photorefractive crystals

Serguei V. Miridonov, Alexei A. Kamshilin, Diana Tentori-Santa-Cruz

Proceedings Volume 2004, Interferometry VI: Applications; (1994) https://doi.org/10.1117/12.172598
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

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.

Citation Download Citation

Serguei V. Miridonov, Alexei A. Kamshilin, and Diana Tentori-Santa-Cruz "Low-noise holographic interferometer using photorefractive crystals", Proc. SPIE 2004, Interferometry VI: Applications, (1 March 1994); https://doi.org/10.1117/12.172598

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