Abstract
We analyze the control of field-free molecular orientation at high temperature by use of a two-color laser bipulse strategy proposed in Zhang et al. [Phys. Rev. A 83, 043410 (2011)]. A general study shows that there exist two types of linear molecules for which a different mechanism has to be used. For molecules with a large hyperpolarizability, a monochromatic laser pre-pulse is applied before the two-color laser pulse at a time close to the rotational period , while for molecules with a small hyperpolarizability, the optimal delay is found close to or . We extend this analysis to the case of a molecule such as NO where a similar control strategy can be derived. These control processes are robust against temperature effects.
1 More- Received 26 January 2012
DOI:https://doi.org/10.1103/PhysRevA.85.043423
©2012 American Physical Society