Studies on the Third-order Optical Nonlinearities of a Series of Hydroxylphenyl Porphyrin

Xinguo Li; Songhao Pei; Xiaowei Zou; LIU Yanling; PENG Weixian; SHI Yingyan; WANG Xingqiao

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Studies on the Third-order Optical Nonlinearities of a Series of Hydroxylphenyl Porphyrin

Xinguo Li 1,Songhao Pei 1,Xiaowei Zou 2,LIU Yanling 2,PENG Weixian 2,SHI Yingyan 2,WANG Xingqiao 2

1.Department of Physics

2.Department of Physics-Department of Chemistry

*Correspondence author

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Funding: none

Opened online: 2 March 2005

Accepted by: none

Citation: Xinguo Li,Songhao Pei,Xiaowei Zou.Studies on the Third-order Optical Nonlinearities of a Series of Hydroxylphenyl Porphyrin[OL]. [ 2 March 2005] http://en.paper.edu.cn/en_releasepaper/content/1624

The nonlinear refraction index n2 and the reverse saturation absorption (RSA) coefficient β of a series of hydroxylphenyl porphyrin have been measured using single beam Z-scan technique with a 8 ns laser pulse at 532nm and the third-order nonlinear susceptibility χ(3) of the samples are calculated. It is seen that a series of hydroxylphenyl porphyrin have large value of the reverse saturation absorption and cubic nonlinear refraction. The effects of molecular structures on the third-order nonlinear optical properties were discussed. Experimental results show that the effects of different numbers and different positions of substituent to the nonlinear refraction of porphyrin are evident.

Keywords:Optical Nonlinearities, hydroxylphenyl porphyrin, Z-scan

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