中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2535-2538.doi: 10.1088/1674-1056/17/7/032

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Investigation of third-order nonlinear optical properties of two azo-nickel chelate compounds

田志远1, 姚建年1, 向红2, 王树峰2, 王振伟2, 李智2, 杨宏2, 龚旗煌2   

  1. (1)Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; (2)State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China
  • 收稿日期:2007-09-08 修回日期:2007-11-07 出版日期:2008-07-09 发布日期:2008-07-09
  • 基金资助:
    Project supported by the National Key Basic Research Special Foundation (NKBRSF) of China (Grant No TG1999075207), and the National Natural Science Foundation of China (Grant Nos 10434020, 10521002, 60378012, 90206003, 10328407 and 90101027).

Investigation of third-order nonlinear optical properties of two azo-nickel chelate compounds

Xiang Hong(向红)a), Tian Zhi-Yuan(田志远)b), Wang Shu-Feng(王树峰)a), Wang Zhen-Wei(王振伟)a), Li Zhi(李智)a), Yang Hong(杨宏)a), Yao Jian-Nian(姚建年)b), and Gong Qi-Huang(龚旗煌)a)†   

  1. a State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China; b Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2007-09-08 Revised:2007-11-07 Online:2008-07-09 Published:2008-07-09
  • Supported by:
    Project supported by the National Key Basic Research Special Foundation (NKBRSF) of China (Grant No TG1999075207), and the National Natural Science Foundation of China (Grant Nos 10434020, 10521002, 60378012, 90206003, 10328407 and 90101027).

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摘要： This paper investigates the third-order nonlinear optical properties of two azo-nickel chelate compounds by the optical Kerr gate method at 830\,nm wavelength with pulse duration of 120\,fs. Both of the two compounds exhibited large third-order optical nonlinearity. The second-order hyperpolarizability, $\gamma$, of Compound 1 is of $1.0\times 10^{ - 31}$\,esu. Due to the charge transfer, the $\gamma$ of Compound 2 with electron donor and acceptor group is $4.9\times10^{ - 31}$\,esu, which is a four-time enhancement in comparison with Compound 1. The absorption spectra show that the electron push--pull effect, which induces intramolecular charge transfer, leads to the increased optical nonlinearity.

关键词: nonlinear optics, ultrafast, azo chelate

Abstract: This paper investigates the third-order nonlinear optical properties of two azo-nickel chelate compounds by the optical Kerr gate method at 830 nm wavelength with pulse duration of 120 fs. Both of the two compounds exhibited large third-order optical nonlinearity. The second-order hyperpolarizability, $\gamma$, of Compound 1 is of $1.0\times 10^{ - 31}$ esu. Due to the charge transfer, the $\gamma$ of Compound 2 with electron donor and acceptor group is $4.9\times10^{ - 31}$ esu, which is a four-time enhancement in comparison with Compound 1. The absorption spectra show that the electron push--pull effect, which induces intramolecular charge transfer, leads to the increased optical nonlinearity.

Key words: nonlinear optics, ultrafast, azo chelate

中图分类号:  (Optical susceptibility, hyperpolarizability)

  • 42.65.An
42.65.Hw (Phase conjugation; photorefractive and Kerr effects) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)