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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 9, Iss. 1 — Jan. 10, 2011
  • pp: 010203–

Photoelectron angular distributions from two-photon ionization of atoms near ionization threshold

Lihua Bai, Tingting Cui, Yuheng Liu, Yan Wang, Dongmei Deng, and Jihui Tao

Chinese Optics Letters, Vol. 9, Issue 1, pp. 010203- (2011)


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Abstract

Photoelectron angular distributions (PADs) from two-photon ionization of atoms in linearly polarized strong laser fields are obtained in accordance with the nonperturbative quantum scattering theory. We also study the influence of laser wavelength on PADs. For two-photon ionization very close to the ionization threshold, most of the ionized electrons are vertically ejected to the laser polarization. PADs from two-photon ionization of atoms are determined by the second order generalized phased Bessel function at which the ponderomotive parameter plays a key role. In terms of dependence of PADs on laser wavelength, corresponding variations for the ponderomotive parameter are demonstrated.

© 2011 Chinese Optics Letters

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(020.2649) Atomic and molecular physics : Strong field laser physics

Citation
Lihua Bai, Tingting Cui, Yuheng Liu, Yan Wang, Dongmei Deng, and Jihui Tao, "Photoelectron angular distributions from two-photon ionization of atoms near ionization threshold," Chin. Opt. Lett. 9, 010203- (2011)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-9-1-010203

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