中国物理B ›› 2007, Vol. 16 ›› Issue (10): 2946-2951.doi: 10.1088/1009-1963/16/10/021

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Two-colour coherent control of multiphoton ionization: a comparison between long-range and short-range potential model atoms

李鹏程, 周效信   

  1. College of Physics and Electronic Engineering,Northwest Normal University, Lanzhou 730070, China
  • 收稿日期:2007-01-04 修回日期:2007-04-17 出版日期:2007-10-08 发布日期:2007-10-08
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10674112) and the Young Teachers Foundation of Northwest Normal University (Grant No NWNU-QN-04-25).

Two-colour coherent control of multiphoton ionization: a comparison between long-range and short-range potential model atoms

Li Peng-Cheng(李鹏程) and Zhou Xiao-Xin(周效信)†   

  1. College of Physics and Electronic Engineering,Northwest Normal University, Lanzhou 730070, China
  • Received:2007-01-04 Revised:2007-04-17 Online:2007-10-08 Published:2007-10-08
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10674112) and the Young Teachers Foundation of Northwest Normal University (Grant No NWNU-QN-04-25).

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摘要： Using the numerical solution of the time-dependent Schr\"odinger equation of a one-dimensional model atom in a two-colour laser field, we have investigated the effects of the potential models on coherent control of atomic multiphoton ionization. It is found that the photoelectron spectra are obviously different for the long-range (Coulomb-like) and short-range (with no excited bound states) potential model atoms, which are produced by two-colour coherent control of atomic multiphoton ionization in a few laser cycles. Our results indicate that two-colour coherent control of atomic multiphoton ionization can be observed in simulations, depending on the choice of the model potentials.

关键词: coherent control, multiphoton ionization, model potential

Abstract: Using the numerical solution of the time-dependent Schr?dinger equation of a one-dimensional model atom in a two-colour laser field, we have investigated the effects of the potential models on coherent control of atomic multiphoton ionization. It is found that the photoelectron spectra are obviously different for the long-range (Coulomb-like) and short-range (with no excited bound states) potential model atoms, which are produced by two-colour coherent control of atomic multiphoton ionization in a few laser cycles. Our results indicate that two-colour coherent control of atomic multiphoton ionization can be observed in simulations, depending on the choice of the model potentials.

Key words: coherent control, multiphoton ionization, model potential

中图分类号:  (Multiphoton ionization and excitation to highly excited states)

  • 32.80.Rm
31.15.-p (Calculations and mathematical techniques in atomic and molecular physics) 32.80.Qk (Coherent control of atomic interactions with photons) 42.50.-p (Quantum optics)