Nonlinear properties of polyurethane-urea/multi-wall carbon nanotube composite films

被引：6
|
作者：
Wang, Jin [1 ,2 ]
Fan, Ya-Xian [1 ,2 ]
Chen, Jing [3 ]
Gu, Bing [1 ,2 ]
Wang, Hui-Tian [1 ,2 ,3 ]
机构：
[1] Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[3] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2010年 / 42卷 / 06期
关键词：
Z-scan technique; Nonlinear refraction; Nonlinear absorption; OPTICAL LIMITING PROPERTIES; DISPERSIONS; SUSPENSIONS;
D O I：
10.1016/j.optlastec.2010.01.014
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The third-order nonlinear optical properties of polyurethane-urea/multiwalled carbon nanotube composites (PU/MWNT) films with different MWNT concentrations are investigated by the use of the Z-scan technique at a wavelength of 532 nm with a pulse duration of 8 ns. The results reveal that the nonlinear refraction and absorption coefficients are linearly dependent on the MWNT concentration. The negative nonlinear refraction effect is validated from the closed-aperture Z-scan measurements. We find that PU/MWNT films are promising nonlinear optical materials, and the nonlinear coefficients can be controlled. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：956 / 959
页数：4
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