Optics Express
Published by The Optical Society of America

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

Alexander Popov, S. Myslivets, and Thomas George
Optics Express, Vol. 7, Issue 3, pp. 148-154

Keywords (OCIS):
(140.4480) Lasers and laser optics : Optical amplifiers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.5650) Nonlinear optics : Raman effect
(190.7220) Nonlinear optics : Upconversion
(200.4740) Optics in computing : Optical processing
(270.1670) Quantum optics : Coherent optical effects
(270.3430) Quantum optics : Laser theory

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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History
Original Manuscript: June 8, 2000
Published: July 31, 2000

Citation
A. Popov, S. Myslivets, and T. George, "Inversionless gain in an optically-dense resonant Doppler-broadened medium," Opt. Express 7, 148-154 (2000)
http://www.opticsinfobase.org/abstract.cfm?URI=oe-7-3-148

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