激光与光电子学进展, 2015, 52 (10): 101901, 网络出版: 2015-10-08
低振幅屏蔽亮孤子在光折变晶体中的自偏转特性
Self-deflection of Low Amplitude Screening Bright Soliton in Photorefractive Crystal
摘要
本文研究了低振幅下的(1+1)维屏蔽亮孤子在光折变介质中的传输特性。数值仿真结果发现,当光束线性传输时会自然衍射;当光束非线性传输时,若忽略扩散机制,可以保持孤子形态且直线传输,若考虑光折变介质的扩散作用,孤子就会发生自偏转,偏转方向及程度与温度有关。最后分析了偏转距离绝对值随温度的变化关系,在某一温度下偏转距离绝对值有最大值,因此可以通过控制温度来改变偏转距离。
Abstract
The propagation performance of a low amplitude one-dimensional screening bright soliton in photorefractive media is studied in this paper. Numerical simulations show that, the beam would present linear diffraction in the isotropic media. While in the anisotropic nonlinear media, without taking the diffusion effect into account, the input beam would keep shape and be a line in the transmission direction. The beam would be selfbending when considering the diffusion effect. What′s more, the direction and degree of self-deflection are related to the temperature. At last, The relationship between self-bending distance and the temperature is analyzed. At a special temperature, we can get the biggest distance and the deflection distance can be controlled changing the temperature.
鄢曼, 覃亚丽, 刘鲜, 任宏亮, 薛林林. 低振幅屏蔽亮孤子在光折变晶体中的自偏转特性[J]. 激光与光电子学进展, 2015, 52(10): 101901. Yan Man, Qin Yali, Liu Xian, Ren Hongliang, Xue Linlin. Self-deflection of Low Amplitude Screening Bright Soliton in Photorefractive Crystal[J]. Laser & Optoelectronics Progress, 2015, 52(10): 101901.