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20 January 2006 Phase-shifting real-time holography with photorefractive crystals
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Proceedings Volume 6027, ICO20: Optical Information Processing; 60272G (2006)
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China
The phase-shifting interferometry techniques is a well-known technique which has been used with great success in optical profilers, micro-displacements, micro-deformations and others applications in Non-Destructive Test in basic research, engineering and biotechnology areas. This work presents our Advances in Phase-Shifting Real-Time Holography using Photorefractive Sillenite. And we have obtained quantitative results in many applications in measurements of micro-rotation, micro-displacements, deformation, surface contouring and whole lens wave-optics. The real-time holography process is doing using the photorefractive Bi12SiO20 crystal recording medium, where the phase-shifting 4-frames method for obtained the phase map, this was filtered by sin/cos filter and was applied the unwrapping process. The experimental results agree with the expected one in these applications and with promises potentialities of this method for studies with in situ visualization, monitoring and analysis.
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M. R. R. Gesualdi, D. Soga, and M. Muramatsu "Phase-shifting real-time holography with photorefractive crystals", Proc. SPIE 6027, ICO20: Optical Information Processing, 60272G (20 January 2006);

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