双光子光折变介质中Manakov屏蔽孤子的温度特性  

Temperature characteristics of Manakov screening solitons in two-photon photorefractive crystals

作　　者：苏艳丽[1] 姜其畅[1] 吉选芒[1] 

机构地区：[1]运城学院物理与电子工程系,运城044000

出　　处：《激光技术》2010年第6期806-808,854,共4页Laser Technology

基　　金：山西省高等学校科技开发资助项目(200611042)

摘　　要：为了研究双光子光折变介质中Manakov屏蔽孤子的温度特性,采用数值模拟的方法,得到了Manakov屏蔽孤子的强度包络,并分析了亮-暗Manakov屏蔽孤子对动态演化的温度特性。结果表明,亮-亮Manakov屏蔽孤子对的强度包络随着晶体温度的升高,其两孤子成分的峰值光强都逐渐减小,而其半峰全宽逐渐增加;暗-暗和亮-暗Manakov屏蔽孤子对具有类似的温度特性。说明通过改变晶体温度可以调控孤子的空间形态。In order to study temperature characteristics of Manakov screening solitons in biased two-photon photorefractive crystals, their intensity profiles were obtained by means of numerical simulation. Moreover, the dynamic evolution of bright-dark Manakov solitons at different temperatures was also analyzed. The results show that, when the temperature of the crystal increases, the peak intensity of two components of the bright-bright Manakov screening solitons will decrease and the full width of half maximum of two components will increase. The dark-dark and bright-dark Manakov screening solitons have the same temperature characteristics as the bright-bright Manakov screening solitons. All the results indicate that the spatial shape of solitons can be regulated by adjusting the temperature of crystals.

关 键 词：非线性光学 双光子光折变效应 Manakov屏蔽孤子 温度特性 

分 类 号：O437[机械工程—光学工程] TN929.11[理学—光学]