中国物理B ›› 2010, Vol. 19 ›› Issue (2): 23301-023301.doi: 10.1088/1674-1056/19/2/023301

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Theoretical study of the influence of intense femtosecond laser field on the evolution of the wave packet and the population of NaRb molecule

马宁, 王美山, 杨传路, 马晓光, 王德华   

  1. School of Physics and Electronic Engineering, Ludong University, Yantai 264025, China
  • 收稿日期:2009-07-13 修回日期:2009-08-11 出版日期:2010-02-15 发布日期:2010-02-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~10674114 and 10604045).

Theoretical study of the influence of intense femtosecond laser field on the evolution of the wave packet and the population of NaRb molecule

Ma Ning(马宁), Wang Mei-Shan(王美山)†, Yang Chuan-Lu(杨传路), Ma Xiao-Guang(马晓光), and Wang De-Hua(王德华)   

  1. School of Physics and Electronic Engineering, Ludong University, Yantai 264025, China
  • Received:2009-07-13 Revised:2009-08-11 Online:2010-02-15 Published:2010-02-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~10674114 and 10604045).

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摘要： Employing the two-state model and the time-dependent wave packet method, we have investigated the influences of the parameters of the intense femtosecond laser field on the evolution of the wave packet, as well as the population of ground and double-minimum electronic states of the NaRb molecule. For the different laser wavelengths, the evolution of the wave packet of 6{ }^1\Sigma ^ + state with time and internuclear distance is different, and the different laser intensity brings different influences on the population of the electronic states of the NaRb molecule. One can control the evolutions of wave packet and the population in each state by varying the laser parameters appropriately, which will be a benefit for the light manipulation of atomic and molecular processes.

Abstract: Employing the two-state model and the time-dependent wave packet method, we have investigated the influences of the parameters of the intense femtosecond laser field on the evolution of the wave packet, as well as the population of ground and double-minimum electronic states of the NaRb molecule. For the different laser wavelengths, the evolution of the wave packet of $6{ }^1\Sigma ^ +$  state with time and internuclear distance is different, and the different laser intensity brings different influences on the population of the electronic states of the NaRb molecule. One can control the evolutions of wave packet and the population in each state by varying the laser parameters appropriately, which will be a benefit for the light manipulation of atomic and molecular processes.

Key words: intense femtosecond laser field, time-dependent wave packet method, wave packet, population

中图分类号:  (Level crossing and optical pumping)

  • 33.80.Be
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)