[1] Chen H C, Sun D L, Song Y Y et al.. Growth and properties of a TB type photorefractive crystal. J. Crystal Growth, 1993, 128(1～4):880～885

[5] Residori S, Ramazza P L, Zhao Mingjun. Dynamics of beam fanning in Cu-doped KNSBN. Optics Communications, 1993, 102(1～2):100～104

[6] Li Y, Liu S, Yang M et al.. Superior real-time holographic storage and properties in doped potassium sodium strontium barium niobate crystal. Opt. Lett., 1997, 22(4):212～214

[7] Ramazza P L, Zhao Mingjun. Experimental study of two wave mixing amplification in Cu-doped KNSBN. Optics Communications, 1993, 102(1,2):93～99

[8] Kamber N Y, Xu Jingjun, Mikha S M et al.. Threshold effect for photorefractive light-induced scattering and signal beam amplification in doped LiNbO3 crystal. J. Appl. Phys., 2000, 78(6):2684～2690

[9] Byron Q, Yeh P. Fanning noise reduction in photorefractive amplifiers using incoherent erasures. Appl. Opt., 1994, 33(2):283～287