Electronic energy transfer in a dense level system

Year: 1992

Authors: Gabbanini C., Biagini M., Gozzini S., Lucchesini A., Kopystynska A., Moi L.

Autors Affiliation: IFAM – CNR – Pisa – Italy; Institute of Experimental Physics, Warsaw University, Warsaw, Poland; Dipartimento di Fisica, Università di Siena, Siena, Italy

Abstract: The fluorescence spectra induced by resonant laser excitation of a vapor mixture containing four alkali atoms have been detected and analyzed. These spectra show a large number of atomic lines due to collisional energy-transfer processes between laser-excited atoms. The ratio of the directly-excited lines to the collisionally-populated lines increases by orders of magnitude when the number of atomic species in the mixture is increased. A model is proposed which gives the right order of magnitude for the observed line populations and permits a detailed analysis of rather complex conditions. The model shows that for a fixed total laser-power density, the internal energy of the vapor mixture may be increased by exciting all of the atomic species and that it is possible to store in the vapor mixture a high fraction of the laser energy.


Volume: 47      Pages from: 103  to: 112

More Information: doi: 10.1016/0022-4073(92)90068-F
I.F.: 0.775
KeyWords: collisional energy transfer; sodium; potassium; rubidium; caesium
DOI: 10.1016/0022-4073(92)90068-F

Citations: 5
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