Real-time computer-aided multiplexed optical intensity correlator using Fresnel holographic filters and a liquid crystal television
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A real-time computer-aided optical intensity correlator using multiplexed Fresnel holographic filters (FHFs) and a liquid crystal television (LCTV) is described. This technique is characterized by the following. The spatially separated multichannel filters are fabricated by a single exposure holographic recording; the multiplexed optical correlator is simple in structure with low alignment requirements; the spatial phase variation existing inherently in the LCTV has no influence on the correlation pattern and the system has a higher discrimination by means of computer preprocessing. Several experimental results are presented.
Wang, Z.Q., et al. 1991. Real-time computer-aided multiplexed optical intensity correlator using Fresnel holographic filters and a liquid crystal television. Optics Communications. 86(1): pp.19-24. Available from http://dx.doi.org/doi:10.1016/0030-4018(91)90236-7