Summary form only given. Double-/spl Lambda/ level schemes offer rich possibilities to study the non-linear interaction of continuous resonant radiation fields with multi-level systems. Efficient four-wave mixing with up- and down-conversion has been demonstrated previously. We report on theoretical and experimental investigations related to four-wave difference-frequency mixing and parametric amplification. As a nonlinear medium Na/sub 2/ molecules produced in a sodium heatpipe are used.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)Nov 11, 20020 citations

Journal of the Optical Society of America A

Experimental verification of nondegenerate four-wave parametric amplification in sodium (A)

Donald J. Harter, Paul Narum, Michael G. Raymer, Robert W. Boyd

Published Jan 1, 1981• 0 citations

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Four-wave optical parametric amplification enhanced by the ac Stark effect has been observed, with the use of a dye laser tuned near the

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line of sodium. This process leads to the generation of sidebands displaced from the laser frequency by the generalized Rabi frequency. Under certain experimental conditions, the emitted radiation is in the form of a cone surrounding the transmitted laser beam. A theoretical model that describes these effects is presented.