Generation and manipulation of bright spatial bound-soliton pairs under the diffusion effect in photovoltaic photorefractive crystals  

作　　者：Ze-Xian Zhang Xiao-Yang Zhao Ye Li Hu Cui Zhi-Chao Luo Wen-Cheng Xu Ai-Ping Luo 张泽贤;赵晓阳;李烨;崔虎;罗智超;徐文成;罗爱平(Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices&Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications,South China Normal University,Guangzhou 510006,China)

机构地区：[1]Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices&Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications,South China Normal University,Guangzhou 510006,China

出　　处：《Chinese Physics B》2020年第10期282-288,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 61875058, 11874018, 11974006, and 61378036).

摘　　要：The generation and propagation characteristics of bright spatial bound-soliton pairs (BSPs) are investigated under the diffusion effect in photovoltaic photorefractive crystals by numerical simulation. The results show that two coherent solitons, one as the signal light and the other as the control light, can form a BSP when the peak intensity of the control light is appropriately selected. Moreover, under the diffusion effect, the BSP experiences a self-bending process during propagating and the center of the BSP moves on a parabolic trajectory. Furthermore, the lateral shift of the BSP at the output face of the crystal can be manipulated by adjusting the peak intensity of the control light. The research results provide a method for the design of all-optical switching and routing based on the manipulation of the lateral position of BSPs.

关 键 词：SOLITONS photovoltaic photorefractive diffusion effect 

分 类 号：O437[机械工程—光学工程]