Qiu Xue-Qiong et al 2008 Chinese Phys. Lett. 25 536 doi:10.1088/0256-307X/25/2/050
Qiu Xue-Qiong1,2, Wu Hui-Xia3, Tong Rui1,2, Qian Shi-Xiong1, Lin Yang-Hui3 and Cai Rui-Fang3
Show affiliationsTwo soluble polymer grafted multi-walled carbon nanotubes (MWNTs), including poly(N-vinylcarbazole)-MWNTs and poly(methyl methacrylate)-MWNTs, are synthesized. Their nonlinear optical properties and optical limiting (OL) performances are investigated by z-scan method with 527nm nanosecond laser pulses. These grafted MWNTs dissolved in chloroform show much better optical limiting performance than those of MWNTs and C60 in toluene solution. Nonlinear absorption and nonlinear scattering mechanism are taken into consideration for explaining the observed results. The comparison of the experimental results shows that nonlinear absorption is the dominant mechanism for OL performance of these new samples.
Issue 2 (February 2008)
Received 15 May 2007
Qiu Xue-Qiong et al 2008 Chinese Phys. Lett. 25 536
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