Mapping the Evolution of Optically-Generated Rotational Wavepackets in a Room Temperature Ensemble of D$2$ - Quantum Physics

Mapping the Evolution of Optically-Generated Rotational Wavepackets in a Room Temperature Ensemble of D$2$ - Quantum Physics - Download this document for free, or read online. Document in PDF available to download.

Abstract: A coherent superposition of rotational states in D$2$ has been excited bynonresonant ultrafast 12 femtosecond intense 2 $\times$ 10$^{14}$Wcm$^{-2}$ 800 nm laser pulses leading to impulsive dynamic alignment.Field-free evolution of this rotational wavepacket has been mapped to hightemporal resolution by a time-delayed pulse, initiating rapid doubleionization, which is highly sensitive to the angle of orientation of themolecular axis with respect to the polarization direction, $\theta$. Thedetailed fractional revivals of the neutral D$2$ wavepacket as a function of$\theta$ and evolution time have been observed and modelled theoretically.

Author: W. A. Bryan, E. M. L. English, J. McKenna, J. Wood, C. R. Calvert, R. Torres, I. C. E. Turcu, J. L. Collier, I. D. Williams, W. R

Source: https://arxiv.org/