The nonlinearity of phase-conjugate beam reflection with four-wave mixing in bismuth silicon oxide crystal by use of moving gratings at large fringe modulation formed by the incident-beam ratio is investigated. On the basis of this investigation, the edge enhancement of an object and the edge-enhanced optical correlation with improved discrimination capability are achieved by use of moving gratings at an appropriate fringe velocity. Experimental results are presented.
© 2000 Optical Society of America
Zhaoqi Wang, Jiuhong Guan, Baolai Liang, and Guoguang Mu, "Edge-Enhanced Correlation with Four-Wave Mixing in Bismuth Silicon Oxide Crystal by Use of Moving Gratings," Appl. Opt. 39, 4112-4116 (2000)