[OPTICAL REVIEW Vol. 4, No. 6 (1997) 683-685]
Extraction of Self-Diffraction Wave in Photorefractive Bi12SiO20 Crystals
Kazuyoku TEI1 and Hideshi YOKOTA2
1Advanced Photon Research Center, JAERI, Tokai, Naka, 319-11 Japan, 2Department of Electro-photo Optics, Tokai University, Kitakaname, Hiratsuka, 259-12 Japan
(Received August 11, 1997; Accepted September 29, 1997)
When two waves are coupled in Bi12SiO20 crystals, the polarization states of the signal wave are affected by the self-diffraction. We have theoretically studied the influence of the self-diffraction on the polarization of the signal wave. The change of polarization states are strongly affected by the self-diffraction effect when the external field is applied. We present a new method that converts the change of polarization into an intensity signal.
Key words : hologram, photorefractive, Bi12SiO20, anisotropic diffraction, two-wave mixing