High-speed incoherent-to-coherent image converter using GaAs

Youichi Bitou; Takumi Minemoto

doi:10.1117/12.346833

29 April 1999 High-speed incoherent-to-coherent image converter using GaAs

Youichi Bitou, Takumi Minemoto

Proceedings Volume 3729, Selected Papers from International Conference on Optics and Optoelectronics '98; (1999) https://doi.org/10.1117/12.346833
Event: Selected Papers from the International Conference on Optics and Optoelectronics, 1998, Dehradun, India

Abstract

A newly optically addressed spatial light modulator using a GaAs crystal plate has been developed for incoherent-to- coherent optical conversions of images. The device has the same structure as the Pockels readout optical modulator. The basic characteristics of the device were as follows: halfwave voltage, 10.5 kV; sensitivity, 0.65 (mu) J/cm² at visible light; resolution, 5.6 line pairs/mm. Its high frame rate operation (larger than 500 Hz) and high contrast ratio (larger than 700:1) were experimentally confirmed, and its applications to Fourier transform of images and joint transform correlations between images were also demonstrated.

Citation Download Citation

Youichi Bitou and Takumi Minemoto "High-speed incoherent-to-coherent image converter using GaAs", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); https://doi.org/10.1117/12.346833

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