Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (21): 2433-2438. Previous Articles     Next Articles

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六棱柱型金属团簇化合物Mo2Ag4S8(dppy)4的合成与非线性光学性质

常青a,b   郑和根 王燕  赵利*,a   

  1. (a复旦大学物理系 上海 200433) (b黑龙江大学电子工程学院 哈尔滨 150080) (c南京大学配位化学国家重点实验室 南京 210093)
  • 投稿日期:2009-05-20 修回日期:2009-06-16 发布日期:2009-07-14
  • 通讯作者: 常青 E-mail:changqing@fudan.edu.cn

Synthesis and Nonlinear Optical Properties of a Hexagonal Cage Cluster Compound Mo2Ag4S8(dppy)4

Chang, Qing a,b    Zheng, Hegen   Wang, Yan   Zhao, Li*,a   

  1. (a Department of Physics, Fudan University, Shanghai 200433) (b College of Electronic Engineering, Heilongjiang University, Harbin 150080) (c Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093)
  • Received:2009-05-20 Revised:2009-06-16 Published:2009-07-14

A new hexagonal prism shaped metal cluster compound Mo2Ag4S8(dppy)4 was synthesized and structurally characterized by single crystal X-ray diffraction measurement. Its third-order nonlinear optical (NLO) properties were investigated by using a Z-scan technique under nanosecond laser pulses at 532 nm. Optical nonlinear response of the metal cluster was researched by using a time-resolved pump-probe experiment under picosecond laser pulses at 532 nm. The experimental results show that the metal cluster exhibits both optical self-focusing effect and optical nonlinear absorption. The nonlinear refractive index n2, the nonlinear absorption coefficient β, and the third-order nonlinear susceptibility χ(3) of Mo2Ag4S8(dppy)4 are 1.45×10-10 esu, 6.2×10-10 m/W, and 2.1×10-11 esu, respectively. The experimental results indicate that the optical nonlinear response for Mo2Ag4S8(dppy)4 originates from the combination of nonlinear absorption and nonlinear scattering.

Key words: metal cluster, optical nonlinearity, Z-scan, pump-probe

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