Optimum and applications of photorefractive spatial light modulator in optical pattern recognition

Xiujian Li; Wenhua Hu; Hui Jia; Jiankun Yang; Yisheng Yang; Shaofeng Guo

doi:10.1117/12.850642

12 May 2010 Optimum and applications of photorefractive spatial light modulator in optical pattern recognition

Xiujian Li, Wenhua Hu, Hui Jia, Jiankun Yang, Yisheng Yang, Shaofeng Guo

Proceedings Volume 7696, Automatic Target Recognition XX; Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIV; and Optical Pattern Recognition XXI; 769621 (2010) https://doi.org/10.1117/12.850642
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

With excellent physical properties the photorefractive crystals, such as BSO (Bi₁₂SiO₂₀), BaTiO₃ and GaAs materials, have, can be widely used in optical correlator to implement auto pattern recognition. As the basic devices in optical correlator, the properties of optically-addressed spatial light modulator are very important. By analyzing the dynamic process of the BSO spatial light modulator, especially the changes of the read-out light while in writing under various operation modes, the distinctness between various operation modes is summarize. Furthermore, considered with the photo-induced current pulses, the method to optimize the BSO spatial light modulator is proposed. The BSO spatial light modulator working in optimum operation mode is used to design a optical correlator to implement auto pattern recognition.

Citation Download Citation

Xiujian Li, Wenhua Hu, Hui Jia, Jiankun Yang, Yisheng Yang, and Shaofeng Guo "Optimum and applications of photorefractive spatial light modulator in optical pattern recognition", Proc. SPIE 7696, Automatic Target Recognition XX; Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIV; and Optical Pattern Recognition XXI, 769621 (12 May 2010); https://doi.org/10.1117/12.850642

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