[2] [2] Chen H C, Xu Y H. Growth and some properties of undoped and doped (K1-xNax)0.4(Sr1-yBay)0.8Nb2O6 single crystals with tungsten-bronze structure. J. Crys. Grow., 1989, (96):357～362

[3] [3] Xu J, Wu Y, Liu S et al.. High-performance self-pumped phase conjugator with a multichannel in KNSBN∶Cu crystal. Opt. Lett., 1991, 16(16):1255～1257

[6] [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

[9] [9] Liang B, Wang Z, Guan J et al.. Cartwright four-wave-mixing and edge-enhanced optical correlation in a Ce∶KNSBN crystal. Opt. Lett., 2000, 25(15):1086～1088

[10] [10] Wang H Y, Tian M Z, Lin J L et al.. Study of two-wave coupling in Cu∶KNSBN using red light. Opt. Commun., 1995, 115(5～6):563～567

[12] [12] Ramazza P L, Zhao M J. Experimental study of two-wave mixing amplification in Cu-doped KNSBN. Opt. Commun., 1993, 102(1,2):93～99

[13] [13] Tomita Y, Matsushima S. Photorefractive beam coupling between orthogonally polarized light beams by linear dicroism in Cu-doped potassium sodium strontium barium niobate. J. Opt. Soc. Am. (B), 1999, 16(1):111～116