Real-time edge-enhanced optical correlation with a cerium-doped potassium sodium strontium barium niobate photorefractive crystal.
The nonlinear diffraction property of a volume grating written by two-wave mixing in a cerium-doped potassium sodium strontium barium niobate crystal is applied in a coherent image processing system to obtain real-time image edge enhancement as well as edge-enhanced optical correlation. The theoretical analysis of the correlator is given, and the experimental results of optical correlation are presented, which are compared with the computer-simulated results.
Liang
B L
BL
Institute of Modern Optics, Opto-Electronic Information Science and Technology Laboratory of the Education Ministry of China, Nankai University, Tianjin 300071, China.
Wang
Z Q
ZQ
Mu
G G
GG
Guan
J H
JH
Liu
H L
HL
Cartwright
C M
CM