Multiphoton ionization of the hydrogen atom exposed to circularly or linearly polarized laser pulses
Wang Pei-Jie(王培杰)a)† and He Feng(何峰)b)
a The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Capital Normal University, Beijing 100048, China; b James R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604, USA
Abstract This paper studies the multiphoton ionization of the hydrogen atom exposed to the linearly or circularly polarized laser pulses by solving the time-dependent Schr?dinger equation. It finds that the ratio of the ionization probabilities by linearly and circularly polarized laser pulses varies with the numbers of absorbing photons. With the same laser intensity, the circularly polarized laser pulse favors to ionize the atom with more ease than the linearly polarized laser pulse if only two or three photons are necessary to be absorbed. For the higher order multiphoton ionization, the linearly polarized laser pulse has the advantage over circularly polarized laser pulse to ionize the atom.
Received: 18 March 2009
Revised: 13 May 2009
Accepted manuscript online:
PACS:
32.80.Rm
(Multiphoton ionization and excitation to highly excited states)
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
Cite this article:
Wang Pei-Jie(王培杰) and He Feng(何峰) Multiphoton ionization of the hydrogen atom exposed to circularly or linearly polarized laser pulses 2009 Chin. Phys. B 18 5291
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