Holographic interferometry techniques using photorefractive crystals of sillenite family Bi12SiO20 (BSO) and their applications in analysis of surfaces

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

doi:10.1117/12.437068

14 August 2001 Holographic interferometry techniques using photorefractive crystals of sillenite family Bi₁₂SiO₂₀ (BSO) and their applications in analysis of surfaces

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

Author Affiliations +

Proceedings Volume 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications; (2001) https://doi.org/10.1117/12.437068
Event: IV Iberoamerican Meeting of Optics and the VII Latin American Meeting of Optics, Lasers and Their Applications, 2001, Tandil, Argentina

Abstract

The Holographic interferometry is a non-destructive testing of analysis on surfaces in basic research, technological and biomedical fields. However, the holographic interferometry techniques in real-time with conventional materials present serious difficulties. The photorefractives crystal are present as an attractive holographic recording medium. The phenomenon that characterizes these crystals in the photorefractive effect, consists of the refractive index modulation through photo-induced and linear electro-optic effect, allows the register of holograms of phase. Also it presents advantages as in situ self-proceeding of the recording medium and its indefinite reusability, i.e. it does not present fatigue. Thus, the objective of this work is the development of a holographic interferometer that uses the photorefractive crystal of the selenite family Bi₁₂SiO₂₀ as holographic recording medium. In this direction, we search to characterize BSO crystal determining some figures of merit in diffusive regime and drift regime. The holographic techniques of metrology are presented in three methods: real time holographic interferometry, double- exposure holographic interferometry, and time-average holographic interferometry had been studied with some applications in analysis of statics and dynamics processes on surfaces.

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M. R. R. Gesualdi, Diogo Soga, and Mikiya Muramatsu "Holographic interferometry techniques using photorefractive crystals of sillenite family Bi₁₂SiO₂₀ (BSO) and their applications in analysis of surfaces", Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); https://doi.org/10.1117/12.437068

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KEYWORDS

Holographic interferometry

Crystals

Holography

Diffraction

Holograms

Laser crystals

Anisotropy

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