Influence of self-diffraction effect on femtosecond pump-probe optical Kerr measurements.
Influence of self-diffraction effect on femtosecond pump-probe optical Kerr measurements.
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DOI：
10.1364/oe.16.012069
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发表时间：
2008-08
期刊：
影响因子：
3.8
通讯作者：
Lihe Yan;Juanjuan Yue;J. Si;X. Hou
中科院分区：
文献类型：
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作者：
Lihe Yan;Juanjuan Yue;J. Si;X. Hou
我们研究了自分效应对BI2O3-B2O3-SIO2玻璃（BI玻璃）和CS2的光学KERR信号的影响。通过测量KERR信号对泵功率的依赖性以及泵和探头梁之间的极化角度，我们发现CS2的光学KERR信号由两个组件组成：快速响应和缓慢的响应，这归因于自diffracraction效应，并分别诱导了光诱导的双光反应效应。自分配效应对KERR信号的贡献随泵功率的增加而增加。对于BI玻璃，未观察到自分曲线对Kerr信号的明显影响。
We investigated influence of the self-diffraction effect on optical Kerr signals of Bi2O3-B2O3-SiO2 glass (BI glass) and CS2 in femtosecond non-collinear pump-probe optical Kerr experiments. By measuring the dependence of the Kerr signals on the pump power and on the polarization angle between pump and probe beams, we found that the optical Kerr signals of CS2 consisted of two components: a fast response and a slow response,which were attributed to the self-diffraction effect and the photoinduced birefringence effect, respectively. The contribution of the self-diffraction effect to the Kerr signals increased with increase of the pump power. For the BI glass, no evident influence of self-diffraction on the Kerr signals was observed.