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Optics Letters

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  • Vol. 30, Iss. 6 — Mar. 15, 2005
  • pp: 664–666

Disentangling the volume effect through intensity-difference spectra: application to laser-induced dissociation of H2+

Pengqian Wang, A. Max Sayler, Kevin D. Carnes, Brett D. Esry, and Itzik Ben-Itzhak  »View Author Affiliations


Optics Letters, Vol. 30, Issue 6, pp. 664-666 (2005)
http://dx.doi.org/10.1364/OL.30.000664


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Abstract

An intensity-difference spectrum method is developed to disentangle the intensity volume effect inherent in focused laser beam interaction with gas-phase matter. This method is applicable to a Gaussian beam of constant axial intensity, which keeps the exact contribution from a predetermined intensity range and eliminates the contributions from lower intensities. We apply this method to the angularly resolved kinetic energy release spectrum of laser-induced dissociation of H2+. The difference spectrum at higher intensities is found to be dominated by the bond-softening process, and the distribution shifts to lower energy and becomes narrower with increasing intensity.

© 2005 Optical Society of America

OCIS Codes
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.7120) Ultrafast optics : Ultrafast phenomena

Citation
Pengqian Wang, A. Max Sayler, Kevin D. Carnes, Brett D. Esry, and Itzik Ben-Itzhak, "Disentangling the volume effect through intensity-difference spectra: application to laser-induced dissociation of H2+," Opt. Lett. 30, 664-666 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-6-664


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