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Proceedings Paper

Effect Of Molecular Rotations On High Intensity Absorption In CO2
Author(s): Andre D Bandrauk; Lorraine Claveau
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Paper Abstract

In intense fields, the Rabi frequency ωR = pE/h can easily be of the order of rotational and vibrational energies of molecules. This means that rotations as well as vibrations become strongly perturbed so that perturbative methods no longer apply. We will show that nonperturbative methods can be derived from the concept of the dressed molecule. This leads to coupled equations which are used ko simulate numerically the multiphoton processes which will occur at intensities > 108 W/cm2. Furthermore, for multiphoton rotational tran-sitions, one can derive analytical models which help one understand the temporal behaviour of energy flow in a molecule in terms of its dressed spectrum, such as chaotic or regular (nonchaotic) behaviour. These results are of relevance to the manifestation of multiphoton coherences in a CO2 spectrum at very high intensities (I % 1012 W/cm2).

Paper Details

Date Published: 21 October 1986
PDF: 6 pages
Proc. SPIE 0664, High Intensity Laser Processes, (21 October 1986); doi: 10.1117/12.938706
Show Author Affiliations
Andre D Bandrauk, Universite de Sherbrooke (Canada)
Lorraine Claveau, Universite de Sherbrooke (Canada)

Published in SPIE Proceedings Vol. 0664:
High Intensity Laser Processes
John A. Alcock, Editor(s)

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