The diffraction efficiency of volume gratings written by two-wave mixing in a cerium-doped potassium sodium strontium barium niobate (Ce:KNSBN) photorefractive crystal is studied. It is found that the diffraction efficiency strongly depends on the polarization of writing beams and exhibits loop behavior with respect to the fringe modulation. The fringe modulations before and behind the crystal are compared. Modified coupled-wave theory is used to fit the experimental data. This research presents data that are relevant to the application of Ce:KNSBN crystals to holographic recording and optical information processing.
© 1999 Optical Society of America
Original Manuscript: February 17, 1999
Revised Manuscript: June 10, 1999
Published: September 10, 1999
Bao-Lai Liang, Zhao-Qi Wang, Guo-Guang Mu, Jiu-Hong Guan, and Colin M. Cartwright, "Diffraction properties of transmission photorefractive volume gratings in a cerium-doped potassium sodium strontium barium niobate crystal," Appl. Opt. 38, 5552-5555 (1999)