Quantum Electronics

Formation of amplitude gratings in the medium of a CO laser subject to the field of its own multifrequency radiation

А. В. Бердышев, A K Kurnosov, Anatoly P. Napartovich

Published Jan 31, 1994• 4 citations

Abstract

It is shown that, under conditions typical of the active medium of a continuous-flow CO laser, large-scale gain gratings play the main role in a phase-conjugation system based on degenerate four-wave mixing. The multifrequency nature of the emission spectrum of a CO laser increases the depth of modulation of the amplitude gratings as a result of two principal mechanisms: the dependence of the rate of relaxation of the function describing the distribution of molecules between vibrational levels on the number of such levels, when this function is disturbed; and the mutual influence of the emission and amplification processes involving adjacent vibrational transitions.

DOI: 10.1070/qe1994v024n01abeh000026

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