Distortion-free gain and noise correlation in sodium vapor with four-wave mixing and coherent population trapping

T. T. Grove*, M. S. Shahriar, P. R. Hemmer, Prem Kumar, V. S. Sudarshanam, M. Cronin-Golomb

*Corresponding author for this work

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

We observed optical gain as great as 30 with nearly distortion-free beam propagation in optically dense sodium vapor, using four-wave mixing. Moreover, 15-dB classical noise correlations were seen in the amplified probe and conjugate beams. To achieve this performance in such a strongly absorbing medium, one must suppress unwanted absorption and self-focusing effects. This is accomplished with coherent population trapping.

Original languageEnglish (US)
Pages (from-to)769-771
Number of pages3
JournalOptics Letters
Volume22
Issue number11
DOIs
StatePublished - Jun 1 1997

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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