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Ienversionless gain in an optically-dense resonant Doppler-broadened medium

A. K. Popov·S. A. Myslivets·Thomas F. George
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Abstract

Resonant nonlinear-optical interference processes in four-level Doppler-broadened media are studied. Specific features of amplification and optical switching of short-wavelength radiation in a strongly-absorbing resonant gas under coherent quantum control with two longer wavelength radiations, are investigated. The major outcomes are illustrated with virtual experiments aimed at inversionless short-wavelength amplification, which also address deficiencies in this regard in recent experiments. With numerical simulations related to the proposed experiment in optically-dense sodium dimer vapor, we show optimal condition for optical switching and the expected gain of the probe radiation, which is above the oscillation threshold.

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A. K. Popov, S. A. Myslivets, Thomas F. George. 2000-08-09. Ienversionless gain in an optically-dense resonant Doppler-broadened medium. https://doi.org/10.1364/oe.7.000148

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