Chinese Journal of Lasers B, 2001, 10 (5): 347, 网络出版: 2006-08-10  

Evolution of Bright Screening-photovoltaic Spatial Optical Solitons

作者单位
State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China
摘要
Abstract
A numerical analysis of the dynamical evolution of bright screening-photovoltaic (SP) spatial solitons in biased photovoltaic-photorefractive materials in the case of neglecting the material loss and the diffusion is presented. When an incident optical beam is a bright SP soliton, the beam propagates along a linear path with its shape kept unchanged. When the incident optical beam is slightly different from a bright SP soliton, the beam reshapes itself and tries to evolve into a bright SP soliton after a short distance. However, when the incident optical beam is significantly different from a SP bright soliton, the beam cannot evolve into a stable bright SP soliton, and tends to experience periodic compression and expansion. For a low-intensity input beam, the wave experiences a periodic process of compression first and then expansion during the initial part of the cycle. For a high-intensity input beam, however, the wave will initially diffract and then experiences compression during the cycle.

LIU Jinsong. Evolution of Bright Screening-photovoltaic Spatial Optical Solitons[J]. Chinese Journal of Lasers B, 2001, 10(5): 347. LIU Jinsong. [J]. 中国激光(英文版), 2001, 10(5): 347.

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