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

Autor: Wang, Pengqian, Sayler, A. Max, Carnes, Kevin D., Esry, Brett D., Ben-Itzhak, Itzik
Zdroj: Optics Letters; March 2005, Vol. 30 Issue: 6 p664-666, 3p
Abstrakt: 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.
Databáze: Supplemental Index