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艾里-高斯光束在光折变介质中的孤子脱落

Soliton Shedding from Airy-Gaussian Beams in Photorefractive Media

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摘要

以非线性薛定谔方程为理论模型,采用分步傅里叶方法研究了光折变介质中艾里-高斯光束的传输特性。结果表明:满足一定条件时,光折变介质中会形成周期振荡的空间孤子;介质的非线性系数越大,形成空间孤子所需的传输距离越短,孤子的振荡周期越小;当艾里-高斯光束的初始入射功率在一定范围内时,光折变介质中才会形成稳定的空间孤子;在空间孤子形成时,由于局部能量竞争,会出现光束分裂成丝现象。此外,还研究了微噪声扰动对艾里-高斯光束在光折变介质中传输稳定性的影响。

Abstract

Starting from the nonlinear Schrodinger equation and by means of split-step Fourier numerical simulation,we study the propagation characteristics of Airy-Gaussian (AiG) beams in a photorefractive media. The results show that a specific set of parameters can result in soliton with periodic oscillation in the photorefractive media. The bigger the nonlinear factor is, the shorter the distance required to form soliton is, and the smaller the oscillation period of the soliton is. When the initial incident power of the Airy-Gaussian beam is within a certain range, the stable soliton can form. In the process of soliton formation, local energy competition leads to beam splitting. In addition, we also check the stability of the beam by perturbing the initial Airy-Gaussian beam.

Newport宣传-MKS新实验室计划
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DOI:10.3788/CJL201946.0805001

所属栏目:光束传输与控制

基金项目:国家自然科学基金;

收稿日期:2019-03-07

修改稿日期:2019-04-08

网络出版日期:2019-08-01

作者单位    点击查看

白小琴:山西大学物理电子工程学院, 山西 太原 030006
王宇浩:山西大学物理电子工程学院, 山西 太原 030006
张静:山西大学物理电子工程学院, 山西 太原 030006
肖燕:山西大学物理电子工程学院, 山西 太原 030006

联系人作者:肖燕(xiaoyan@sxu.edu.cn)

备注:国家自然科学基金;

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引用该论文

Xiaoqin Bai, Yuhao Wang, Jing Zhang, Yan Xiao. Soliton Shedding from Airy-Gaussian Beams in Photorefractive Media[J]. Chinese Journal of Lasers, 2019, 46(8): 0805001

白小琴, 王宇浩, 张静, 肖燕. 艾里-高斯光束在光折变介质中的孤子脱落[J]. 中国激光, 2019, 46(8): 0805001

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