论文信息 - High-speed incoherent-to-coherent image converter using GaAs

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

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.

Youichi Bitou | Takumi Minemoto

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