Abstract

In the case of degenerate four-wave mixing in a cerium-doped potassium sodium strontium barium niobate (Ce:KNSBN) crystal, it is found that the transmission grating is dominant when the incident beams are extraordinarily polarized, the crystal response is more rapid, and the conjugate beam is more intense. Furthermore, the variation of the conjugate beam intensity forms a loop as the fringe modulation of the transmission grating varies. Based on this observation, we have implemented edge enhancement of an image and edge-enhanced optical correlation via four-wave mixing in a Ce:KNSBN crystal without the requirement of reversal of the signal–pump-beam intensity ratio.

© 2000 Optical Society of America

Real-time edge-enhanced optical correlation with a cerium-doped potassium sodium strontium barium niobate photorefractive crystal

Bao-Lai Liang, Zhao-Qi Wang, Guo-Guang Mu, Jiu-Hong Guan, Hong-Li Liu, and C. M. Cartwright
Appl. Opt. 39(17) 2925-2930 (2000)

Edge-enhanced correlation with four-wave mixing in bismuth silicon oxide crystal by use of moving gratings

Zhaoqi Wang, Jiuhong Guan, Baolai Liang, and Guoguang Mu
Appl. Opt. 39(23) 4112-4116 (2000)

Diffraction properties of transmission photorefractive volume gratings in a cerium-doped potassium sodium strontium barium niobate crystal

Bao-Lai Liang, Zhao-Qi Wang, Guo-Guang Mu, Jiu-Hong Guan, and Colin M. Cartwright
Appl. Opt. 38(26) 5552-5555 (1999)

Enhancement of two-wave coupling in a Ce:KNSBN crystal with optimum polarization of the writing beams

Bao-Lai Liang, Zhaoqi Wang, C. M. Cartwright, W. A. Gillespie, Mei-Song Ding, and Hui Zhang
Appl. Opt. 40(20) 3359-3364 (2001)

Photorefractive properties of Cu-doped KNSBN crystal with fluorine replacing oxygen

Xiaonong Shen, Jianhua Zhao, Ruibo Wang, Pochi Yeh, Shujun Zhang, and Huanchu Chen
Opt. Lett. 23(16) 1253-1255 (1998)