Ultrafast nonlinear optical response of Au:TiO2 composite nanoparticle films
Ultrafast nonlinear optical response of Au:TiO2 composite nanoparticle films
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DOI：
10.1016/j.physb.2004.11.085
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发表时间：
2005-03
影响因子：
2.8
通讯作者：
Chunfeng Zhang;Ye Liu;G. You;Bo Li;Jianlin Shi;S. Qian
中科院分区：
文献类型：
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作者：
Chunfeng Zhang;Ye Liu;G. You;Bo Li;Jianlin Shi;S. Qian
利用飞秒光克尔效应（OKE）和泵浦-探测方法，研究了掺金纳米粒子的TiO{sub 2}薄膜的超快非线性光学响应。对溶胶-凝胶法制备的薄膜在不同温度下进行热处理，观察到表面等离子体共振峰随热处理温度的升高而红移。实验结果表明，三阶非线性极化率约为10{sup-10} esu，与热处理温度有关。
By using femtosecond optical Kerr effect (OKE) and pump-probe methods, we investigated the ultrafast nonlinear optical response of TiO{sub 2} films doped with gold nanoparticles. These films fabricated in a sol-gel way were heat treated at different temperatures, and the red shift of peak of the surface plasmon resonance with increase of heat treatment temperature was observed. The results of the experiment indicated that the third-order nonlinear susceptibility, about 10{sup -10} esu, depended on the heat treatment temperature.