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Proceedings Paper

Real-time holographic interferometry using photorefractive Sillenite crystals with phase-stepping technique
Author(s): Marcos R. R. Gesualdi; Diogo Soga; Mikiya Muramatsu
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Paper 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.

Paper Details

Date Published: 21 October 2004
PDF: 6 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.591711
Show Author Affiliations
Marcos R. R. Gesualdi, Univ. de Sao Paulo (Brazil)
Diogo Soga, Univ. de Sao Paulo (Brazil)
Mikiya Muramatsu, Univ. de Sao Paulo (Brazil)


Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

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