Abstract

The possibilities of stabilization of the interference pattern by filtration of a random-phase noise caused by vibrations, turbulence, and other local changes in the wave front in interferometric measurements are investigated. Dynamic holographic recording in photorefractive Bi₁₂TiO₂₀ crystals is used. The parameters of the holographic recording are presented for determination of the dynamic range for filtering. Noise filtering takes place in real time and contributes to the enhancement of the contrast and the signal-to-noise ratio of the interference pattern. This results in a considerable increase in the sensitivity and the accuracy of the interferometric measurements.

© 1996 Optical Society of America

Dynamic holographic moiré patterns in photorefractive Bi₁₂TiO₂₀ and small-angle measurements

Paulo Acioly Marques dos Santos, Luis Carlos da Silva Nunes, and Inaya Corrêa
Appl. Opt. 39(25) 4524-4528 (2000)

Holographic interferometric microscope on the basis of a Bi₁₂TiO₂₀ crystal

D. Tontchev, S. Zhivkova, and M. Miteva
Appl. Opt. 29(32) 4753-4756 (1990)

Electrophotochromic gratings in photorefractive Bi₁₂TiO₂₀ crystals

A. A. Kamshilin, J. Frejlich, and P. M. Garcia
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Holographic interferometry using −1-order diffraction in photorefractive Bi₁₂SiO₂₀ and Bi₁₂TiO₂₀ crystals

S. L. Sochava, R. C. Troth, and S. I. Stepanov
J. Opt. Soc. Am. B 9(8) 1521-1527 (1992)

Experimental comparison of the ac field and the moving-grating holographic-recording techniques for Bi₁₂SiO₂₀ and Bi₁₂TiO₂₀ photorefractive crystals

S. L. Sochava, E. V. Mokrushina, V. V. Prokof’ev, and S. I. Stepanov
J. Opt. Soc. Am. B 10(9) 1600-1604 (1993)