低振幅屏蔽亮孤子在光折变晶体中的自偏转特性

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.

参考文献

[1] Segev M, Crosignani B, Yariv A, et al.. Spatial solitons in photorefractive media[J]. Phys Rev Lett, 1992, 68(7): 923-926.

[2] Duree G C, Shultz J L, Salamo G J, et al.. Observation of self-trapping of an optical beam due to the photorefractive effect[J]. Phys Rev Lett, 1993, 71(4): 533-536.

[3] Segev M, Valley G C, Crosignani B, et al.. Steady-state spatial screening solutions in photorefractive materials with external applied field[J]. Phys Rev Lett, 1994, 73(24): 3211-3214.

[4] D N Christodoulides, M I Carvalho. Bright, dark, and gray spatial soliton states in photorefractive media[J]. J Opt Soc Am B, 1995, 12(9): 1628-1633.

[5] Valley G C, Segev M, Crosignani B, et al.. Dark and bright photovoltaic spatial solutions[J]. Phys Rev A, 1994, 50(6): R4457-R4460.

[6] Taya M, Bashaw M C, Fejer M M, et al.. Observation of dark photovoltaic spatial solutions[J]. Phys Rev A, 1995, 52(4): 3095-3100.

[7] Cheng L J, Partovi A. Temperature and intensity dependence of photorefractive effect in GaAs[J]. Appl Phys Lett, 1986, 49(21): 1456-1458.

[8] 吉选芒, 刘劲松. 光折变晶体中低振幅屏蔽孤子的温度特性[J]. 运城学院学报, 2004, 22(5): 5-7.

Ji Xuanmang, Liu Jinsong. Temperature dependence of the low-amplitude screening spatial solitions in photorefractive crystal[J]. Journal of Yuncheng University, 2004, 22(5): 5-7.

[9] 施瑶瑶, 吴彤, 刘友文, 等. 艾里光束自弯曲性质的控制[J]. 光子学报, 2013, 42(12): 1404-1407.

Shi Yaoyao, Wu Tong, Liu Youwen, et al.. Control of self-bending Airy beams[J]. Acta Photonica Sinica, 2013, 42(12): 1404-1407.

[10] 董亮伟, 马利红, 王辉. 光折变介质中空间光孤子自弯曲现象研究[J]. 光学学报, 2007, 27(8): 1485-1489.

Dong Liangwei, Ma Lihong, Wang Hui. Self-bending effect of spatial soliton in photorefractive medium[J]. Acta Optica Sinica, 2007, 27(8): 1485-1489.

[11] Hao Zhonghua, Liu Jinsong. Self-deflection of a bright soiiton in a separate bright-dark spatial soliton pair based on a higher-order space charge field[J]. Chin Phys B, 2003, 12(10): 01124.

[12] Ke Chen, Yali Qin, Hongliang Ren, Hao Wen. The temperature properties of partially spatially coherent beams in biased photorefractive crystal[C]. 2010 9th International Conference on Optical Communications and Networks, 2010, 286-289.

[13] Cheng L J, Partovi A. Temperature and intensity dependence of photorefractive effect in GaAS[J]. Appl Phys Lett, 1986, 49(21): 1456-1458.

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.

低振幅屏蔽亮孤子在光折变晶体中的自偏转特性

关于本站 Cookie 的使用提示

全站搜索

低振幅屏蔽亮孤子在光折变晶体中的自偏转特性

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索