高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (2): 279.

• 论文 • 上一篇    下一篇

C60的激发态光谱S1→Sn,T1→Tn与反饱和吸收

封继康1, 李君1, 费浩生2, 车彦龙2, 孙家钟3   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 吉林大学物理系, 长春 130023;
    3. 吉林大学理论化学研究所, 长春 130023
  • 收稿日期:1994-03-28 修回日期:1994-08-13 出版日期:1995-02-24 发布日期:1995-02-24
  • 通讯作者: 封继康,男,56岁,教授,博士生异师.
  • 作者简介:封继康,男,56岁,教授,博士生异师
  • 基金资助:

    国家自然科学基金;吉林大学理论化学计算国家重点实验室资助;吉林大学分子光谱与分子结构开放实验室资助

The Excited-States Spectra(S1→Sn,T1→Tn) and Reverse Saturable Absorption of C60

FENG Ji-Kang1, LI Jun1, FEI Hao-Sheng2, CHE Yan-Long2, SUN Jia-Zhong3   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Department of Physics, Jilin University, Changchun, 130023;
    3. Institute of Theoretical Chemistry, Jilin University, Changchun, 130023
  • Received:1994-03-28 Revised:1994-08-13 Online:1995-02-24 Published:1995-02-24

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摘要： 用INDO/CI方法研究了C60分子的电子结构及基态和激发态光谱(S0→Sn,S1→Sn,T1→Tn)、激发态分子动态学和反饱和吸收的微观机制.用动态模型解速率方程.实现反饱和吸收的必要条件是激发态对激光的吸收截面必须大于基态对激光的吸收截面.在波长532nm的激光作用下,C60满足该条件,故C60呈现反饱合吸收特征,理论分析与实验结果一致.

关键词: C60, 激发态, 反饱和吸收

Abstract: The electronic structure,ground and excited-states spectra (S0→Sn,S1→Sn,T1→Tn),excited-state molecular dynamics and micromechanism of reverse saturable absorption of C60molecule were studied by using INDO/CI method.Adynamic model has been used for resolving rate equations.It is concluded that the necessary condition of reverse saturable absorption is the absorption cross section of exited state must be larger than that of ground state for LASER.This condition is satisfied when the wavelength of incident LASER is equal to 532 nm for C60,so the character of reverse saturable absorption appears.

Key words: C60, Excited states, Reverse saturable absorption

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