Wang Haitao, Fan Chengyu, Zhang Pengfei, Qiao Chunhong, Zhang Jinghui, Ma Huimin
Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei Anhui, 230031, China.
Opt Express. 2010 Nov 8;18(23):24301-6. doi: 10.1364/OE.18.024301.
The influence mechanism of higher-order Kerr effect on the propagation of laser beam is investigated by a modified model, which indicates that a collapsing wave will transform into a universe blowup profile. The analysis of higher-order terms of the nonlinear refractive index shows that the filamentation process can be induced by Kerr self-focusing without the occurrence of the ionization effect. The determining role of the combination of self-focusing and spontaneous defocusing and the energy reservoir in formation of lengthy filament is confirmed visually.
通过一个改进的模型研究了高阶克尔效应对激光束传播的影响机制，该模型表明坍缩波将转变为一种全域爆炸型。对非线性折射率高阶项的分析表明，丝状化过程可由克尔自聚焦诱导，而无需电离效应的发生。直观地证实了自聚焦和自发散焦的组合以及能量储存库在长丝状结构形成中的决定性作用。
