Abstract
We present a novel configuration for optical phase conjugation (OPC) based on +c-face incident geometry in a pentagon-shaped 0°-cut photorefractive BaTiO3 crystal. By choosing the geometry such as the orientation between the pump beam (or beams) and the crystal’s c-axis, one phase-conjugate wave in self-pumped phase conjugation (SPPC) and two phase-conjugate waves in mutually pumped phase conjugation (MPPC) can be generated proficiently. In SPPC, a steady phase-conjugate output with a fast response time ~0.4 s is obtained when the incident beam is of intensity as low as 4 W/cm2. The influences of position and angle on the temporal phase-conjugate response are investigated and a very fine structure (~128 1p/mm) in a phase-distorted image can also be recovered. In MPPC, two very steady phase-conjugate outputs of two incoherent beams can be created and are all remarkably insensitive to angular and lateral positional changes of the input beams. Two phase-distorted images are simultaneously phase conjugated and resolved in 8-micrometer features without cross talk.
© 2001 Optical Society of America
PDF ArticleMore Like This
Chi Ching Chang, Tzu Chiang Chen, Hon Fai Yau, and Pei Xian Ye
333 Photorefractive Effects, Materials, and Devices (PR) 2003
Li Chuan Tang, Tzu Chiang Chen, Guang Wei Hu, and Chi Ching Chang
ThI3_4 Conference on Lasers and Electro-Optics/Pacific Rim (CLEO/PR) 2001
Chi Ching Chang, Tzu Chiang Chen, Hon Fai Yau, and Pei Xian Ye
WMPC10 Advances in Photorefractive Materials, Effects and Devices (PR) 1999