中国物理B ›› 2012, Vol. 21 ›› Issue (4): 43402-043402.doi: 10.1088/1674-1056/21/4/043402

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于国洋1,宋云飞1,何兴1,郑贤旭2,谭多旺2,陈军2,杨延强1   

  • 收稿日期:2011-09-01 修回日期:2011-10-26 出版日期:2012-02-29 发布日期:2012-02-29
  • 通讯作者: 杨延强, E-mail:yqyang@hit.edu.cn E-mail:yqyang@hit.edu.cn

Vibrational relaxation dynamics in transient grating spectroscopy studied by rate equations based on time-dependent correlation function

Yu Guo-Yang(于国洋)a), Song Yun-Fei(宋云飞)a), He Xing(何兴)a), Zheng Xian-Xu(郑贤旭)b), Tan Duo-Wang(谭多旺)b), Chen Jun(陈军)b), and Yang Yan-Qiang(杨延强)a)†   

  1. a. Center for Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    b. National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2011-09-01 Revised:2011-10-26 Online:2012-02-29 Published:2012-02-29
  • Contact: Yang Yan-Qiang, E-mail:yqyang@hit.edu.cn E-mail:yqyang@hit.edu.cn
  • Supported by:
    Project supported by the Defense Industrial Technology Development Program of China(Grant No.B1520110002),the Pre-Research Foundation of PLA General Armament Department,China(Grant No.9104C6709101106),and the National Natural Science Foundation of China(Grant Nos.20973050 and 20573028)

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Abstract: A modified model, a set of rate equations based on time-dependent correlation function, is used to study vibrational relaxation dynamics in transient grating spectroscopy. The dephasing, the population dynamics, and the vibrational coherence concerning two vibrational states are observed respectively in organic dye IR780 perchlorate molecules doped polyvinyl alcohol matrix. The result shows that in addition to the information concerning system-environment interaction and vibrational coherence, the vibrational energy transfer can be described by this modified model.

Key words: transient grating, population dynamics, vibrational energy transfer

中图分类号:  (Rotational and vibrational energy transfer)

  • 34.50.Ez
42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 78.47.jj (Transient grating spectroscopy)