Liu D T, Cheng L J
Appl Opt. 1992 Sep 10;31(26):5675-80. doi: 10.1364/AO.31.005675.
A real-time GaAs and liquid-crystal television- (LCTV-) based optical correlator is demonstrated. The speed of this correlator (video rate) is limited by the LCTV's; with faster spatial light modulators, the potential speed of a GaAs-based correlator may be 1000 frames/s or higher. Comparisons are made between VanderLugt and joint transform configurations and between degenerate and nondegenerate four-wave mixings. The edge-enhancement effect and the Bragg diffraction effect are also discussed.
展示了一种基于实时砷化镓和液晶电视（LCTV）的光学相关器。该相关器的速度（视频速率）受液晶电视的限制；使用更快的空间光调制器，基于砷化镓的相关器的潜在速度可能达到1000帧/秒或更高。对范德卢格特配置和联合变换配置之间以及简并和非简并四波混频之间进行了比较。还讨论了边缘增强效应和布拉格衍射效应。
