中国物理B ›› 2011, Vol. 20 ›› Issue (1): 13103-013103.doi: 10.1088/1674-1056/20/1/013103

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Excited state refraction of C70/toluene studied by using 4f coherent imaging system with phase object

石光1, 刘南春2, 杨俊义2, 宋瑛林3   

  1. (1)Department of Physics, Harbin Institute of Technology, Harbin 150001, China; (2)School of Physical Science and Technology, Suzhou University, Suzhou 215006, China; (3)School of Physical Science and Technology, Suzhou University, Suzhou 215006, China;Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2010-01-31 修回日期:2010-03-26 出版日期:2011-01-15 发布日期:2011-01-15
  • 基金资助:
    Project supported by the National Natural Science Fundation of China (Grant No. 90922007).

Excited state refraction of C70/toluene studied by using 4f coherent imaging system with phase object

Liu Nan-Chun(刘南春)a),Shi Guang(石光)b), Yang Jun-Yi(杨俊义)a),and Song Ying-Lin(宋瑛林) a)b)†   

  1. a School of Physical Science and Technology, Suzhou University, Suzhou 215006, China; b Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2010-01-31 Revised:2010-03-26 Online:2011-01-15 Published:2011-01-15
  • Supported by:
    Project supported by the National Natural Science Fundation of China (Grant No. 90922007).

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摘要： Dynamic nonlinearities of C70/toluene solution are measured and analysed by an improved picosecond time-resolved pump-probe system based on a nonlinear imaging technique with phase object. The photophysical parameters are determined by the five-level model, which is adopted to interpret the experimental data. The change of refraction index per unit density of the excited state obtained by a numerically simulation is a critical factor to determine the nonlinear behaviour of C70 in picosecond time regime.

关键词: 4f system, excited state refraction, C70/toluene solution, refraction index per unit density

Abstract: Dynamic nonlinearities of C70/toluene solution are measured and analysed by an improved picosecond time-resolved pump-probe system based on a nonlinear imaging technique with phase object. The photophysical parameters are determined by the five-level model, which is adopted to interpret the experimental data. The change of refraction index per unit density of the excited state obtained by a numerically simulation is a critical factor to determine the nonlinear behaviour of C70 in picosecond time regime.

Key words: 4f system, excited state refraction, C70/toluene solution, refraction index per unit density

中图分类号: 

  • 31.70.Hg
42.70.Mp (Nonlinear optical crystals) 42.65.-k (Nonlinear optics)