Image processing by four-wave mixing in photorefractive GaAs

Gheen, Gregory; Cheng, Li-Jen
November 1987
Applied Physics Letters;11/9/1987, Vol. 51 Issue 19, p1481
Academic Journal
Three image processing experiments were performed by degenerate four-wave mixing in photorefractive GaAs. The experiments were imaging by phase conjugation, edge enhancement, and autocorrelation. The results show that undoped, semi-insulating, liquid-encapsulated Czochralski-grown GaAs crystals can be used as effective optical processing media despite their small electro-optic coefficient.


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