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

页码：956 / 959

页数：4

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