Computation of multiphoton IR spectra of small molecules: Application to CO

J. V. Moloney; F. H.M. Faisal

doi:10.1088/0022-3700/12/17/013

Computation of multiphoton IR spectra of small molecules: Application to CO

J. V. Moloney, F. H.M. Faisal

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

A non-perturbative theoretical method has been generalised to compute rovibrational multiphoton excitation probabilities in small molecules. The practicability of the method is illustrated by direct computation for CO. Novel non-linear features emerge in the absorption spectrum when the power broadening of individual rovibrational lines becomes comparable to the rotational constant of the molecule. The results also establish that over-simplified N-level models should be treated with caution.

Original language	English (US)
Article number	013
Pages (from-to)	2829-2840
Number of pages	12
Journal	Journal of Physics B: Atomic and Molecular Physics
Volume	12
Issue number	17
DOIs	https://doi.org/10.1088/0022-3700/12/17/013
State	Published - Dec 1 1979
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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N2 - A non-perturbative theoretical method has been generalised to compute rovibrational multiphoton excitation probabilities in small molecules. The practicability of the method is illustrated by direct computation for CO. Novel non-linear features emerge in the absorption spectrum when the power broadening of individual rovibrational lines becomes comparable to the rotational constant of the molecule. The results also establish that over-simplified N-level models should be treated with caution.

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