基于扩散效应及暗辐射强度对温度的依赖关系,研究了温度对有偏压光伏光折变晶体中高斯光束自偏转特性的影响.将高斯光束作为入射类孤子波,采用数值方法求解含扩散项的波传播方程.结果表明,当晶体的温度在一定的范围内变化时,光束中心沿一抛物线轨迹偏转,并且光束中心偏转距离随温度的增加而增加,在一个特定温度处达到最大值,之后随温度的增加而减小.当温度发生足够大的变化时,高斯光束将不稳定甚至崩溃.通过调节晶体的温度能改变高斯光束的自偏转.
参考文献
| [1] | Singh S R,Christodoulides D N.Evolution of spatial optical solitons in biased photorefractive media under steady state conditions[J].Opt.Comm.,1995,118:569-576. |
| [2] | Christodoulides D N,Carvalho M I.Bright,dark and gray spatial soliton states in photorefvactive media[J].J.Opt.Soc.Am.B,1995,12(9):1628-1633. |
| [3] | Segev M,Valley G C,Bashaw M C,et al.Photovoltaic spatial solitons[J].J.Opt.Soc.Am.B,1997,14(7):1772-1781. |
| [4] | Duree G C,Shultz J L,Salamo G J,et al.Observatiom of self-trapping of an optical beam due to the photorefractive effect[J].Phys.Rev.Left.,1993,71(4):533-536. |
| [5] | Liu Jinsong,Lu Keqing.Screening-photovoltaic spatial solitons in biased photovoltalc-photorefractive crystals and their self-deflection[J].J.Opt.Soc.Am.B,1999,16(4):550-555. |
| [6] | Zhong Weiping.Numerical simulation of photorefractive spatial soliton propagation in optically induced crystal[J].Chinese Journal of Quantum Electronics (量子电子学报),2007,24(3):365-368 (in Chinese). |
| [7] | Zhang Duying,Liu Jinsong,Liang Changhong.Solitary evolution of Gauss beam in photovoltaic-photorefactive crystal[J].Acta Optica Sinica (光学学报),2001,21(6):647-651 (in Chinese). |
| [8] | Hao Zhonghua,Liu Jinsong.Modulation on dynamical evolution of Gaussian beam in an unbiased serial photorefractive crystal circuit[J].Acta Physica Sinica (物理学报),2002,51(12):2772-2777 (in Chinese). |
| [9] | Cheng L J,Partovi A.Temperature and intensity dependence of photorefractive effect in GaAs[J].Appl.Phys.Lett.,1986,49(21):1456-1458. |
| [10] | Ji Xuanmang,Wang Jinlai,Liu Jingsong,et al.The temperature dependence of incoherently coupled bright-dark screening photovoltaic solution pairs[J].Laser Technology (激光技术),2004,28(4):386-389 (in Chinese). |
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