[1] Segev M, Crosignani B,Yariv A,et al.Spatial solitions in photorefractive media.Phys Rev Lett, 1992, 68(7):923～926

[2] Duree G C, Shultz J L, Salamo G J, et al.Observation of self-trapping of an optical beam due to the photorefractive effect.Phys Rev Lett, 1993, 71(4):533～536

[3] Segev M, Valley G C, Crosignani B,et al. Steady-state spatial screening Solitions in photorefractive materials with external applied field.Phys Rev Lett, 1994, 73(24):3211～3214

[4] Christodoulides D N, Carvalho M I. Bright,dark, and gray spatial solition states in photorefractive media.J Opt Soc Am(B), 1995, 12(9):1628～1633

[5] Valley G C, Segev M, Crosignani B,et al. Dark and bright photovoltaic spatial solitions. Phys Rev(A),1994, 50(6):R4457～R4460

[6] Taya M, Bashaw M C, Fejer M M,et al. Observation of dark photovoltaic spatial solitions.Phys Rev(A),1995,52(4):3095～3100

[7] Segev M, Valley G C,Bashaw M C, et al.Photovoltaic spatial solitions.J Opt Soc Am(B), 1997,14(7):1772～1781

[9] Liu Jinsong, Lu Keqing. Screening-photovoltaic spatial solitons in biased photovoltaic-photorefractive crystals and their self-deflection.J Opt Soc Am(B), 1999,16(4):550～555

[10] Liu Jinsong, Shi Shunxiang,Li Minghua,et al. Temperature dependence of two-beam Coupling in Ce:LiNbO3 Crystal.Chinese Science Bulletin, 1992,37(9):718～721

[11] Cheng L J, Partovi A. Temperature and intensity dependence of photorefractive effect in GaAs.Appl Phys Lett, 1986,49(21):1456～1458

[12] Hou Chunfeng, Li Yan, Yuan Baohong,et al. Low-amplitude screening-photovoltaic spatial solitions in biased photovoltaic photorefractive crystals. Chinese Journal of Lasers, 2000,89(6):551～557