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Applied Physics A

Two-photon resonant four-wave mixing processes in atomic barium

J. J. Heinrich, Wolfgang Behmenburg

Published Nov 1, 1980• 43 citations
Publisher
DOI
10.1007/bf00914920

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In order to study the Rydberg state of Barium atom,single photon resonant degenerate four-wave mixing(FWM)was used to measure the 6s6p1P1 energy level of Barium atom,and FWM specture signal under different experimental conditions were achieved.The results showed that the influence of temperature and laser intensity on FWM are relatively obvious but the buffer gas pressure is relatively poor.These results may serve as a useful reference in further research work on the Rydberg state of Barium atom.

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Two-photon resonant processes in atomic barium vapour

R. Stringat, G. Fabre, M Taleb

Two-photon resonant or nearly resonant optical processes have been investigated in atomic barium vapour ( approximately 10 17 cm -3 ) with a pulse dye laser (frequency omega L ) covering the range 735-415 nm. These interactions result in strong coherent emissions emitted either forward and backward, or forward only. The optical processes responsible for these coherent emissions have been identified. Seventy five lines (frequency omega ES ) emitted from 1000 to 360 nm are due to optically pumped stimulated emissions or stimulated electronic hyper-Raman scattering. Twenty eight lines (frequency omega sigma ) observed from 795 to 250 nm are generated through four-wave-mixing parametric processes with omega sigma =2 omega L +or- omega ES , and nine- (795-260 nm) through six-wave-mixing parametric processes with omega sigma =2 omega L - omega ES1 - omega ES2 +or- omega ES3 .

Journal of Physics B Atomic Molecular and Optical Physics•Dec 28, 1988•4 citations
In order to study the Rydberg state of Barium atom,single photon resonant degenerate four-wave mixing(FWM)was used to measure the 6s6p1P1 energy level of Barium atom,and FWM specture signal under different experimental conditions were achieved.The results showed that the influence of temperature and laser intensity on FWM are relatively obvious but the buffer gas pressure is relatively poor.These results may serve as a useful reference in further research work on the Rydberg state of Barium atom.
Two-photon resonant or nearly resonant optical processes have been investigated in atomic barium vapour ( approximately 10 17 cm -3 ) with a pulse dye laser (frequency omega L ) covering the range 735-415 nm. These interactions result in strong coherent emissions emitted either forward and backward, or forward only. The optical processes responsible for these coherent emissions have been identified. Seventy five lines (frequency omega ES ) emitted from 1000 to 360 nm are due to optically pumped stimulated emissions or stimulated electronic hyper-Raman scattering. Twenty eight lines (frequency omega sigma ) observed from 795 to 250 nm are generated through four-wave-mixing parametric processes with omega sigma =2 omega L +or- omega ES , and nine- (795-260 nm) through six-wave-mixing parametric processes with omega sigma =2 omega L - omega ES1 - omega ES2 +or- omega ES3 .