26 May 1999 Photorefractive coherence gating for laser interferometric applications
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Abstract
A novel noise-insensitive optical interferometric technique has been developed for highly scattering environment, using photorefractive coherence grating. Two-wave mixing process in a photorefractive barium titanate crystal effectively reduces scattering noise, and we have successfully detected interferometric signals through scattering media of up to 17 mfp, with a high visibility. We have also demonstrated two- dimensional thickness measurement of an optically scattering thin film using our new interferometry.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Akira Shiratori, Minoru Obara, "Photorefractive coherence gating for laser interferometric applications", Proc. SPIE 3610, Laser Material Crystal Growth and Nonlinear Materials and Devices, (26 May 1999); doi: 10.1117/12.349222; https://doi.org/10.1117/12.349222
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