中国物理B ›› 2010, Vol. 19 ›› Issue (2): 20302-020302.doi: 10.1088/1674-1056/19/2/020302

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Bohmian mechanics to high-order harmonic generation

蔡庆宇1, 詹明生2, 赖炫扬3   

  1. (1)State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China; (2)State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China;Centre for Cold Atom Physics, The Chinese Academy of Sciences, Wuhan 430071, Chi; (3)State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China;Graduate University of the Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2009-04-06 修回日期:2009-05-15 出版日期:2010-02-15 发布日期:2010-02-15

Bohmian mechanics to high-order harmonic generation

Lai Xuan-Yang(赖炫扬)a)b), Cai Qing-Yu(蔡庆宇) a)†, and Zhan Ming-Sheng(詹明生)a)c)   

  1. a State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China; b Graduate University of the Chinese Academy of Sciences, Beijing 100190, China; c Centre for Cold Atom Physics, The Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2009-04-06 Revised:2009-05-15 Online:2010-02-15 Published:2010-02-15

摘要: This paper introduces Bohmian mechanics (BM) into the intense laser-atom physics to study high-order harmonic generation. In BM, the trajectories of atomic electron in an intense laser field can be obtained with the Bohm--Newton equation. The power spectrum with the trajectory of an atomic electron is calculated, which is found to be irregular. Next, the power spectrum associated with an atom ensemble from BM is considered, where the power spectrum becomes regular and consistent with that from quantum mechanics. Finally, the reason of the generation of the irregular spectrum is discussed.

Abstract: This paper introduces Bohmian mechanics (BM) into the intense laser-atom physics to study high-order harmonic generation. In BM, the trajectories of atomic electron in an intense laser field can be obtained with the Bohm--Newton equation. The power spectrum with the trajectory of an atomic electron is calculated, which is found to be irregular. Next, the power spectrum associated with an atom ensemble from BM is considered, where the power spectrum becomes regular and consistent with that from quantum mechanics. Finally, the reason of the generation of the irregular spectrum is discussed.

Key words: Bohmian mechanics, high-order harmonic generation

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.50.-p (Quantum optics)