Coherent population trapping studied through energy transfer and energy-pooling collisions

Year: 1999

Authors: Gozzini S., Sartini P., Gabbanini C., Lucchesini A., Moi L., Marinelli C., Alzetta G., Xu J.H.

Autors Affiliation: CNR – Ist Fis Atom & Mol, I-56127 Pisa, Italy;
Univ Siena, INFM, Unita Siena, I-53100 Siena, Italy;
Univ Pisa, Dipartimento Fis, INFM, I-56126 Pisa, Italy;
Scuola Normale Super Pisa, I-56126 Pisa, Italy

Abstract: The coherent population trapping phenomenon in sodium is probed through energy transfer and energy pooling collisions. Quenching of the excited state population (dark resonance) is measured through the detection of the collisional induced fluorescence up to sodium densities as large as 10(15) cm(-3). Two dark resonances have been studied and a different dependence on the sodium vapor density has been observed. For the first time an enhancement of the upper level population and, hence, of the collisional energy transfer processes has been measured correlated to the double coherent excitation. (C) 1999 Elsevier Science B.V. All rights reserved.


Volume: 160 (1-3)      Pages from: 75  to: 79

KeyWords: atomic coherence; coherent phenomena;
DOI: 10.1016/S0030-4018(98)00623-3

Citations: 5
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