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二维材料的空间自相位调制研究进展(英文) 被引量:2
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作者 张学军 袁振华 +4 位作者 杨瑞欣 何奕林 秦应霖 肖思 何军 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第9期2295-2306,共12页
当强激光入射二维材料离散体时,透过的激光会出现自衍射环,这是一种空间自相位调制现象,可以用于测试非线性光学参数和实现光开关。现在,关于空间自相位调制现象的机理仍有争论,主要聚焦在是二维材料的非线性折射率主导还是激光的热效... 当强激光入射二维材料离散体时,透过的激光会出现自衍射环,这是一种空间自相位调制现象,可以用于测试非线性光学参数和实现光开关。现在,关于空间自相位调制现象的机理仍有争论,主要聚焦在是二维材料的非线性折射率主导还是激光的热效应主导。理论的缺失限制了相位调制的维度,只能调控衍射环的半径和竖直方向的失衡。因此,有必要建立一个普适的空间自相位调制理论体系。 展开更多
关键词 非线性光学 空间自相位调制 二维材料
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Effect of concentration on the formation time of diffraction rings in spatial self-phase modulation
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作者 何奕林 张景迪 +2 位作者 肖思 王迎威 何军 《Chinese Optics Letters》 SCIE EI CAS CSCD 2022年第1期112-116,共5页
A new unsaturated wind-chime model is proposed for calculating the formation time of the diffraction rings induced by spatial self-phase modulation(SSPM) in molybdenum disulfide suspension.To optimize the traditional ... A new unsaturated wind-chime model is proposed for calculating the formation time of the diffraction rings induced by spatial self-phase modulation(SSPM) in molybdenum disulfide suspension.To optimize the traditional wind-chime model,the concentration variable of 2 D materials was introduced.The results of the unsaturated wind-chime model match quite well with the SSPM experimental results of molybdenum disulfide.Based on this model,the shortest formation time of diffraction rings and their corresponding concentration and light intensity can be predicted using limited data.Theoretically,by increasing the viscosity coefficient of the solution,the response time of the diffraction ring,to reach the maximum value,can be significantly reduced.It has advanced significance in shortening the response time of photonic diodes. 展开更多
关键词 spatial self-phase modulation wind-chime model nonlinear optics
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