Monitoring long-term evolution of molecular vibrational wave packet using high-order harmonic generation

Details Monitoring long-term evolution of molecular vibrational wave packet using high-order harmonic generation Monitoring long-term evolution of molecular vibrational wave packet using high-order harmonic generation

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10b5026e&link_type=abstract

New Journal of Physics, Volume 10, Issue 2, pp. 025026 (2008).

Physics

3

Scientific paper

We present a method for probing ultrafast nuclear dynamics in molecules using transient enhancement of high-order harmonic generation (HHG). The method exploits strong dependence of the overall harmonic yield in a fixed spectral range on the nuclear separation in a molecule, which is shown to take place for both aligned and randomly oriented molecules. Our numerical simulations show that this method is capable of monitoring long-term evolution of the nuclear vibrational wave packets in molecules, even in light-weight ones, with very high time resolution. By the example of D2+ vibrational wave packet launched via tunnelling ionization of D2 and probed by a time-delayed 8 fs laser pulse with λ = 800 nm and the peak intensity of 1014 W cm-2, we show that the time-delay dependence of the high harmonic signal exhibits pronounced features, which are due to the collapses and revivals of the nuclear wave packet. The time-frequency analysis of the pump probe signal reveals structures with a periodicity down to 6 fs, which correspond to the fractional revivals of orders 1/5 and 1/10. With the laser parameters used, the deuteron motion during the probe pulse is shown to have almost negligible effect on the resulting signal.

Affiliated with

Also associated with

No associations

Rating

Monitoring long-term evolution of molecular vibrational wave packet using high-order harmonic generation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Monitoring long-term evolution of molecular vibrational wave packet using high-order harmonic generation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitoring long-term evolution of molecular vibrational wave packet using high-order harmonic generation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1528317