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arXiv:quant-ph/0005114 · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Atomic coherence and interference phenomena in resonant nonlinear optical interactions

Alexander K. Popov, Sergei G. Rautian

Published May 10, 1996• 6 citations
arXivHTMLPDF

Abstract

Interference effects in quantum transitions, giving rise to amplification without inversion, optical transparency and to enhancements in nonlinear optical frequency conversions are considered. Review of the relevant early theoretical and experimental results is given. The role of relaxation processes, spontaneous cascade of polarizations, local field effects, Doppler- broadening, as well as specific features of the interference in the spectral continuum are discussed.

DOI
10.1117/12.239495

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Summary form only given. Atomic coherence and interference of quantum pathways provides the means to manipulate the spectral features of absorption-gain and refractive indexes as well as the nonlinear-optical response of a medium. These open opportunities for lasing without inversion, forming laser-induced transparency, for manipulating by phase matching, and for increase in output of frequency-mixing generation. Theory and first experimental evidence of laser-induced continuum structures (LICS) have been reported. In this paper we develop the theory of LICS on the case of two strong fields coupled to bound-free transitions.