Chin. Phys. Lett.  2007, Vol. 24 Issue (2): 442-445    DOI:
Original Articles |
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
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ZHANG Guang-Yong, LIU Jin-Song, LIU Shi-Xiong et al  2007 Chin. Phys. Lett. 24 442-445
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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.

Keywords: 42.65.Jx      42.65.Hw      42.65.Tg     
Received: 22 August 2006      Published: 24 February 2007
PACS:  42.65.Jx (Beam trapping, self-focusing and defocusing; self-phase modulation)  
  42.65.Hw (Phase conjugation; photorefractive and Kerr effects)  
  42.65.Tg (Optical solitons; nonlinear guided waves)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2007/V24/I2/0442
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ZHANG Guang-Yong
LIU Jin-Song
LIU Shi-Xiong
WANG Cheng
ZHANG Hui-Lan
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