Non-resonant third-order non-linear optical properties of amorphous GeSe2 film

被引:9
作者
Liu, QM [1 ]
Lu, B
Zhao, XJ
Gan, FX
Mi, J
Qian, SX
机构
[1] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China
[2] Wuhan Univ, Int Software Sch, Wuhan 430070, Peoples R China
[3] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[4] Fudan Univ, Sch Informat Sci & Engn, Shanghai 200433, Peoples R China
[5] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
关键词
D O I
10.1016/j.jnoncrysol.2005.07.014
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The real and imaginary parts of third-order susceptibility of amorphous GeSe2 film were measured by the method of the femtosecond optical heterodyne detection of optical Kerr effect at 805 nm with the 80 fs ultra fast pulses. The results indicated that the values of real and imaginary parts were 8.8 x 10(-12) esu and -3.0 x 10(-12) esu, respectively. An amorphous GeSe2 film also showed a very fast response within 200 fs. The ultra fast response and large third-order non-linearity are attributed to the ultra fast distortion of the electron orbits surrounding the average positions of the nucleus of Ge and Se atoms. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:3147 / 3151
页数:5
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