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

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.

7 pages, 12 eps figures. Video/audio clips of the related virtual experiments are available on http://kirensky.krasn.ru/popov/opa/opa.htm

References in corpus (4)

• Quantum noise and correlations in resonantly enhanced wave mixing based on atomic coherence
• Atomic coherence and interference phenomena in resonant nonlinear optical interactions
• Nonlinear interference effects in emission, absorption, and generation spectra
• Inversionless amplification and laser-induced transparency at the discrete transitions and the transitions to continuum

Cited by in corpus (2)

• Manipulative resonant nonlinear optics: nonlinear interference effects and quantum control of nonlinearity, dispersion, transparency and inversionless amplification in an extended strongly-absorbing inhomogeneously-broadened medium
• Sub-Doppler resolution with double coherently driving fields