中国物理B ›› 2009, Vol. 18 ›› Issue (11): 4834-4839.doi: 10.1088/1674-1056/18/11/037

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Interference of dissociating wave packets in the I2 molecule driven by femtosecond laser pulses

韩永昌, 胡文辉, 于杰, 丛书林   

  1. Department of Physics, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2008-08-13 修回日期:2009-03-02 出版日期:2009-11-20 发布日期:2009-11-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10674022 and 20633070).

Interference of dissociating wave packets in the I2 molecule driven by femtosecond laser pulses

Han Yong-Chang(韩永昌), Hu Wen-Hui(胡文辉), Yu Jie(于杰),andCong Shu-Lin(丛书林)†   

  1. Department of Physics, Dalian University of Technology, Dalian 116024, China
  • Received:2008-08-13 Revised:2009-03-02 Online:2009-11-20 Published:2009-11-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10674022 and 20633070).

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摘要： The interference between two dissociating wave packets of the I2 molecule driven by femtosecond laser pulses is theoretically studied by using the time-dependent quantum wave packet method. Both the internuclear distance- and velocity-dependent density functions are calculated and discussed. It is demonstrated that the interference pattern is determined by the phase difference and the delay time between two pump pulses. With two identical pulses with a delay time of 305~fs and a FWHM of 20~fs, more interference fringes can be observed, while with two pump pulses with a delay time of 80~fs and a FWHM of 20~fs, only a few interference fringes can be observed.

Abstract: The interference between two dissociating wave packets of the I2 molecule driven by femtosecond laser pulses is theoretically studied by using the time-dependent quantum wave packet method. Both the internuclear distance- and velocity-dependent density functions are calculated and discussed. It is demonstrated that the interference pattern is determined by the phase difference and the delay time between two pump pulses. With two identical pulses with a delay time of 305 fs and a FWHM of 20 fs, more interference fringes can be observed, while with two pump pulses with a delay time of 80 fs and a FWHM of 20 fs, only a few interference fringes can be observed.

Key words: photodissociation, interference of wave packets, I2 molecule

中图分类号:  (Diffuse spectra; predissociation, photodissociation)

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