[1] SEGEV M,CROSIGNANI B,YARIV A,et al.Spatial solitons in photorefractive media[J].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[J].Phys Rev Lett,1993,71(4):533-536.
[3] CHRISTODOULIDES D N,CARVALHO M I.Bright,dark and gray spatial soliton states in photorefvactive media[J].J O S A,1995,B12(9):1628-1633.
[4] SEGEV M,VALLEY G C,BASHAW M C,et al.Photovoltaic spatial solitons[J].J O S A,1997,B14(7):1772-1781.
[5] ZHANG G Y,LIU J S.Self-deflection characteristics of dark photovoltaic spatial solitons in closed circuit[J].Acta Optica Sinica,2006,26(10):1559-1561(in Chinese).
[6] LIU J S,LU K Q.Spatial solitaire wave in biased photovoltaic-photorefractive crystals[J].Acta Physica Sinica,1998,47(9):1509-1515(in Chinese).
[7] LIU J S,LU K Q.Screening-photorefractive spatial solitons in biased photovoltaic-photorefractive crystals and their self-deflection.[J].J O S A,1999,B16(4):550-555.
[8] HOU Ch F,YUAN B H,SUN X D.Incoherently coupled screening-photovoltaic soltion pairs[J].Acta Physica Sinica,2004,49(10):1969-1971(in Chinese).
[9] JI X M,WAN J L,LIU J S,et al.The temperature dependence of incoherently coupled bright-dark screening photovoltaic solution pairs[J].Laser Technology,2004,28(4):386-389(in Chinese).
[10] CASTRO-CAMUS E,MAGANA L F.Prediction of the physical response for the two-photon photorefractive effect[J].Opt Lett,2003,28(13):1129-1131.
[11] HOU Ch F,PEI Y B,ZHOU Z X,et al.Spatial solitons in two-photon photorefractive media[J].Phys Rev,2005,A71(5):053817/1-053817/6.
[12] HOU Ch F,ZHANG Y,JIANG Y Y,et al.Photovoltaic solitons in two-photon photorefractive materials under open-circuit conditions[J].Opt Commun,2007,273(2):544-548.
[13] ZHANG Y,HOU Ch F,SUN X D.Grey spatial solitons due to two-photon photorefractive effect[J].Chinese Physics,2007,16(1):159-164(in Chinese).
[14] ZHANG Y,HOU Ch F,SUN X D.Incoherently coupled spatial soliton pairs in two-photon photorefractive media[J].Acta Physica Sinica,2007,56(6):3261-3265(in Chinese).
[15] ZHANG G Y,LIU J S.Screening-photovoltaic spatial solitons in biased two-photo photovoltaic photorefractive crystals[J].J O S A,2009,B26(1):113-120.