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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

  • 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。

     

    Abstract: 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.

     

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