Optical testing by dynamic holographic interferometry with photorefractive crystals and computer image processing

Ionel Valentin Vlad; Dragos Popa; M. P. Petrov; Alexei A. Kamshilin

doi:10.1117/12.51074

1 January 1991 Optical testing by dynamic holographic interferometry with photorefractive crystals and computer image processing

Ionel Valentin Vlad, Dragos Popa, M. P. Petrov, Alexei A. Kamshilin

Author Affiliations +

Proceedings Volume 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection; (1991) https://doi.org/10.1117/12.51074
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

The structure and operation o a holographic intererometer that employs photorefractive crystals (o the sillenite Family) as reusable recording materials and computer image processing or rapid and precise interpretation o the fringe patterns are discussed. Different types of two-wave mixing (2WM) and four-wave mixing (4VM) were applied to optical testing by timeaverage and double..exposure hoaographic intererometry. A very convenient matching was found in the setup or the BTO crystals and usual Re—Ne lasers, when the exposures were o r.lOs or light energy densities o 4 x lO" W/cm2.

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Ionel Valentin Vlad, Dragos Popa, M. P. Petrov, and Alexei A. Kamshilin "Optical testing by dynamic holographic interferometry with photorefractive crystals and computer image processing", Proc. SPIE 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection, (1 January 1991); https://doi.org/10.1117/12.51074

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