Effect Of Molecular Rotations On High Intensity Absorption In CO2

Andre D Bandrauk; Lorraine Claveau

doi:10.1117/12.938706

21 October 1986 Effect Of Molecular Rotations On High Intensity Absorption In CO₂

Andre D Bandrauk, Lorraine Claveau

Proceedings Volume 0664, High Intensity Laser Processes; (1986) https://doi.org/10.1117/12.938706
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada

Abstract

In intense fields, the Rabi frequency ^ω_R = 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).

Citation Download Citation

Andre D Bandrauk and Lorraine Claveau "Effect Of Molecular Rotations On High Intensity Absorption In CO₂", Proc. SPIE 0664, High Intensity Laser Processes, (21 October 1986); https://doi.org/10.1117/12.938706

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