Real-time nonlinear optical correlator in speckle metrology

Akifumi Ogiwara; Junji Ohtsubo

doi:10.1117/12.49719

1 November 1991 Real-time nonlinear optical correlator in speckle metrology

Akifumi Ogiwara, Junji Ohtsubo

Proceedings Volume 1564, Optical Information Processing Systems and Architectures III; (1991) https://doi.org/10.1117/12.49719
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

In speckle correlation technique, both the specklegram and its Fourier transformed fringe pattern are detected by nonlinear Optic RAM detectors. The speckle correlation is calculated by the nonlinear optical correlator using a phase modulation property of a liquid crystal television. The effects of the binarization for the signals on the diffraction efficiency are discussed theoretically and experimentally.

Citation Download Citation

Akifumi Ogiwara and Junji Ohtsubo "Real-time nonlinear optical correlator in speckle metrology", Proc. SPIE 1564, Optical Information Processing Systems and Architectures III, (1 November 1991); https://doi.org/10.1117/12.49719

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