中国物理B ›› 2003, Vol. 12 ›› Issue (3): 305-309.doi: 10.1088/1009-1963/12/3/310

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Investigation on ultrafast third-order optical nonlinearity of metal(dmit)2/(mnt)2 charge transfer complexes

王树峰, 黄文涛, 刘春玲, 杨宏, 龚旗煌   

  1. Department of Physics, State Key Laboratory of Mesoscopic Physics, Peking University, Beijing 100871, China
  • 收稿日期:2002-09-16 修回日期:2002-11-14 出版日期:2003-03-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National Key Basic Research Special Foundation of China (Grant No G1999075207) and the National Natural Science Foundation of China (Grant Nos. 19884001 and 19525412). Project also supported in part by Grant-in-Aid for Scientific

Investigation on ultrafast third-order optical nonlinearity of metal(dmit)2/(mnt)2 charge transfer complexes

Wang Shu-Feng (王树峰)a, Huang Wen-Tao (黄文涛)a, Liu Chu-Ling (刘春玲)a, Yang Hong (杨宏)a, Gong Qi-Huang (龚旗煌)a, Takashi Kobayashib, Tsuyoshi Takeyamab, Masashi Horikirib, Yasuhiro F. Miurab   

  1. a Department of Physics, State Key Laboratory of Mesoscopic Physics, Peking University, Beijing 100871, China b Department of Materials Science, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama 225-8507, Japan
  • Received:2002-09-16 Revised:2002-11-14 Online:2003-03-16 Published:2005-03-16
  • Supported by:
    Project supported by the National Key Basic Research Special Foundation of China (Grant No G1999075207) and the National Natural Science Foundation of China (Grant Nos. 19884001 and 19525412). Project also supported in part by Grant-in-Aid for Scientific

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摘要： We have investigated the transient third-order optical nonlinearity of the solutions of Metal(dmit)_2/(mnt)_2 salts in acetone by employing femtosecond optical Kerr gate measurement at 830 nm wavelength. An order of enhancement on the second-order hyperpolarizability is found for the above salts with central atoms of Cu and Ni. We have suggested an explanation for the enhancement based on the extension of electronic conjugation by the centring Cu or Ni atom.

Abstract: We have investigated the transient third-order optical nonlinearity of the solutions of Metal(dmit)2/(mnt)2 salts in acetone by employing femtosecond optical Kerr gate measurement at 830 nm wavelength. An order of enhancement on the second-order hyperpolarizability is found for the above salts with central atoms of Cu and Ni. We have suggested an explanation for the enhancement based on the extension of electronic conjugation by the centring Cu or Ni atom.

Key words: third-order optical nonlinearity, organic charge transfer complexes, ultrafast spectroscopy

中图分类号:  (Phase conjugation; photorefractive and Kerr effects)

  • 42.65.Hw
42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 78.55.Kz (Solid organic materials)