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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 6, Iss. 11 — Nov. 1, 2008
  • pp: 800–803

Influence of laser intensity on the double-resonance multiphoton ionization process of NO molecule

Guiyin Zhang and Yidong Jin  »View Author Affiliations


Chinese Optics Letters, Vol. 6, Issue 11, pp. 800-803 (2008)


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Abstract

The analytic formula of the ionization efficiency in the process of double resonance enhanced multi-photon ionization (DREMPI) is derived from the dynamic rate equation about the interaction of photon and material. Based on this formula, the ionization efficiency and the laser power index versus laser intensity in the DREMPI process of NO molecule, via A2\sum and S2\sum intermediate resonant states, is numerically simulated. It is shown that the ionization efficiency of NO molecule increases with the laser intensity until getting saturation, while the laser power index decreases with the enhancement of the laser intensity and changes to zero at last. The variation of the laser power index with the laser intensity indicates that the ionization efficiency reaches saturation in the one, two, and three excitation steps respectively. It is also found that the narrower the laser pulse duration is, the higher becomes the laser intensity for saturation.

© 2008 Chinese Optics Letters

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(260.5210) Physical optics : Photoionization

Citation
Guiyin Zhang and Yidong Jin, "Influence of laser intensity on the double-resonance multiphoton ionization process of NO molecule," Chin. Opt. Lett. 6, 800-803 (2008)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-6-11-800

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