Self-Deflection of Dark Screening Spatial Solitons Based on Higher-Order Space Charge Field
ZHANG Guang-Yong 1,2, LIU Jin-Song 1, LIU Shi-Xiong1, WANG Cheng1, ZHANG Hui-Lan1
1 School of Optoelectronics Science and Engineering, State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
2 Department of Physics, China University of Geosciences, Wuhan 430074
Self-Deflection of Dark Screening Spatial Solitons Based on Higher-Order Space Charge Field
1 School of Optoelectronics Science and Engineering, State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
2 Department of Physics, China University of Geosciences, Wuhan 430074
摘要The effects of higher-order space charge field on the self-deflection of dark screening spatial solitons in biased photorefractive crystals are numerically investigated under steady-state conditions. The expression for an induced space-charge electric field including higher-order space-charge field terms is obtained. Numerical results indicate that dark solitons possess a self-deflection process during propagation, and the solitons always bend in the direction of the c axis of the crystal. The self-deflection of dark solitons can experience considerable increase especially in the regime of high bias field strengths.
Abstract：The effects of higher-order space charge field on the self-deflection of dark screening spatial solitons in biased photorefractive crystals are numerically investigated under steady-state conditions. The expression for an induced space-charge electric field including higher-order space-charge field terms is obtained. Numerical results indicate that dark solitons possess a self-deflection process during propagation, and the solitons always bend in the direction of the c axis of the crystal. The self-deflection of dark solitons can experience considerable increase especially in the regime of high bias field strengths.
ZHANG Guang-Yong;LIU Jin-Song;LIU Shi-Xiong;WANG Cheng;ZHANG Hui-Lan. Self-Deflection of Dark Screening Spatial Solitons Based on Higher-Order Space Charge Field[J]. 中国物理快报, 2007, 24(2): 442-445.
ZHANG Guang-Yong, LIU Jin-Song, LIU Shi-Xiong, WANG Cheng, ZHANG Hui-Lan. Self-Deflection of Dark Screening Spatial Solitons Based on Higher-Order Space Charge Field. Chin. Phys. Lett., 2007, 24(2): 442-445.
[1] Segev M, Valley G C, Crosignani B, Di Porto P and Yariv A 1994 Phys. Rev. Lett. 73 3211 [2] Christodoulides D N and Carvalho M I 1995 J. Opt. Soc. Am.B 12 1628 [3] Rotschild C, Cohen O, Manela O, Carmon T and Segev M 2004 J.Opt. Soc. Am. B 21 1354 [4] Facao M and Parker D F 2003 Phys. Rev. E 68016610. [5] Shih M F, Segev M, Valley G C, Salamo G, Crosignani B and Di PortoP 1995 Electron. Lett. 31 826 [6] Segev M, Valley G C, Bashaw M C, Taya M and Fejer M M 1997 J.Opt. Soc. Am. B 14 1772 [7] Valley G C, Segev M, Crosignani B, Yariv A, Fejer M M and Bashaw MC 1994 Phys. Rev. A 50 R4457 [8] Wang H C and She W L 2005 Chin. Phys. Lett. 22 128 [9] She W L, Lee K K and Lee W K 1999 Phys. Rev. Lett. 833183 [10] Taya M, Bashaw M C, Fejer M M, Segev M and Valley G C 1995 Phys. Rev. A 52 3095 [11] Liu J S and Lu K Q 1999 J. Opt. Soc. Am. B 16 550 [12] Liu J S 2001 Chin. Phys. 10 1037 [13] Hou C F, Du C G et al 2002 Chin. Phys. Lett. 19 63 [14] Fazio E, Renzi F, Rinaldi R, Bertolotti M, Chauvet M, Ramadan W,Petris A and Vlad V I 2004 Appl. Phys. Lett. 85 2193 [15] Shih M F, Leach P, Segev M, Garrett M, Salamo G J and Valley G C1995 Opt. Lett. 21 324 [16] Petter J, Weilbau C, Denz C, Stepken A and Kaiser F l 1999 Opt. Commun. 170 291 [17] Carvalho M I, Singh S R and Christodoulides D N 1995 Opt.Commun. 120 311 [18] Singh S R, Carvalho M I and Christodoulides D N 1996 Opt.Commun. 130 288 [19] Liu J S and Hao Z H 2002 J. Opt. Soc. Am. B 19 513 [20] Zhang G Y, Liu J S, Liu S X, Zhang H L and Wang C 2006 J.Opt. A: Pure Appl. Opt. 8 442
2007, Vol. 24 
