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【期刊论文】Nonlinear optical and optical-limiting properties of Azobenzene liquid crystal polymer☆
梁忠诚, Pei Wanga, *, Hai Minga, Jiang-Ying Zhanga, Zhong-Cheng Lianga, Yong-Hua Lua, Qi-Jing Zhangb, Jian-Ping Xiea, Yu-Peng Tianc
Optics Communications 203(2002)159-162,-0001,():
-1年11月30日
The nonlinear absorption coefficient b of Azo (Azobenzene) liquid crystal polymer (LCP) was measured by using open aperture Z-scan technique with 10 ns, 532nm laser pulses.The value of b is 9.02cm/GW. The optical limiting (OL) response of Azo LCP in tetrahydrofuran (THF) was measured also by use of the Q-switched (10 ns) secondharmonic generation Nd:YAG pulse. We attribute the nonlinear absorption and OL property of Azo LCP to TPA effect at 532 nm.2002 Published by Elsevier Science B.V.
Nonlinear optical, Optical limiting, Azo LCP
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梁忠诚, XuXingsheng, , MingHai, WangPei, LiangZhongcheng, and Zhang Qijin
JOURNAL OF OPTICS A: PURE AND APPLIED OPTICS (2002) L5-L7,-0001,():
-1年11月30日
Birefringent gratings induced by absorbing multi-photons at 532 nm in azobenzene doped polymethyl methacrylate(azo-PMMA)fibres were investigated.The maximum photo-induced birefringence observed from the fibre is about 3.0×10−5. The two-photon absorption coefficient β of the azo-PMMA at 532 nm obtained by the Z-scan method is 10.2cm GW−1, and the birefringence response time of the azobenzene is 10 μs.
Multi-photon absorption,, birefringent gratings,, polymer fibre
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梁忠诚, , 王沛, 明海, 谢建平
光电子·激光,2001,12(7)684~685,-0001,():
-1年11月30日
本文报道了在低功率Nd:YVO4倍频激光器连续光泵浦下用Z-扫描技术对偶氮液晶聚合物CN2的非线性光学特性研究。结果表明:CN2在532nm的激光作用下,不仅表现出显著的非线性折射率γ(约-10-4cm2/W),而且表现出很大的非线性吸收系数β(约40cm/W)。
偶氮聚合物, 全息记录材料, 非线性光学特性
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