Real-time holographic interferometry using photorefractive Sillenite crystals with phase-stepping technique

Marcos R. R. Gesualdi; Diogo Soga; Mikiya Muramatsu

doi:10.1117/12.591711

21 October 2004 Real-time holographic interferometry using photorefractive Sillenite crystals with phase-stepping technique

Marcos R. R. Gesualdi, Diogo Soga, Mikiya Muramatsu

Author Affiliations +

Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.591711
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela

Abstract

This work applies a holographic interferometer setup that it uses the photorefractive Bi₁₂SiO₂₀ crystals for Real-Time Holographic Interferometry (RTHI) in diffusive regimen with configuration exhibiting difraction anisotropy. This device is connected with an interferogram-analysis method that uses the phase-stepping technique for quantitative measurement of changes on object. So we captured holographic interferograms from test surface, and calculated the phase map, using images by Four-Frame Method, and removed the wrapping of tangent function (unwrapping), using the Cellular-Automata Technique. We are obtained good results in applications in basic research, dentistry and technological areas.

Citation Download Citation

Marcos R. R. Gesualdi, Diogo Soga, and Mikiya Muramatsu "Real-time holographic interferometry using photorefractive Sillenite crystals with phase-stepping technique", Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); https://doi.org/10.1117/12.591711

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