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Excitation energy transfer by collisions in atomic vapours in the presence of laser light

A. Kopystyńska

Jan 1, 19850 citations

Collision cross sections for excitation energy transfer in Na* (3P 1/2)+K(4S 1/2)⇔Na*(3P 3/2)+K(4S 1/2) processes

Vlasta Horvatić, D. Veža, Mladen Movre +2 more

Zeitschrift für Physik D Atoms Molecules and ClustersSep 1, 19956 citations

POLARISATION EFFECTS IN ENERGY-TRANSFER COLLISIONS BETWEEN LASER-EXCITED ATOMS

Gerard Nienhuis

Nous étudions l'équation pilote généralisée pour la matrice densité d'un atome à deux niveaux dégénérés dans un champ laser ayant une polarisation arbitraire. Cette étude est utilisée pour l'analyse des collisions de transfert d'énergie entre deux atomes excités par laser, en termes des taux collisionnels pour les sous-états magnétiques. Les résultats sont appliqués à nos récentes mesures de l'ionisation associative entre deux atomes Na(3P) excités et polarisés par laser.Nous étudions l'équation pilote généralisée pour la matrice densité d'un atome à deux niveaux dégénérés dans un champ laser ayant une polarisation arbitraire. Cette étude est utilisée pour l'analyse des collisions de transfert d'énergie entre deux atomes excités par laser, en termes des taux collisionnels pour les sous-états magnétiques. Les résultats sont appliqués à nos récentes mesures de l'ionisation associative entre deux atomes Na(3P) excités et polarisés par laser.

Le Journal de Physique ColloquesJan 1, 19855 citations

Time dependences in energy transfer process induced by collision between two 3P-excited sodium atoms

A. Kopystyńska, Pawel Kowalczyk

Optics CommunicationsJun 1, 197824 citations

Cross sections for the Na(4D)→Na(4F) excitation energy transfer induced by collisions with He, Ar and Na atoms

Vlasta Horvatić, Mladen Movre, Cedomil Vadla

Abstract. The cross sections for the Na.4D/! Na.4F / excitation energy transfer induced by collisions with He, Ar and Na ground-state atoms have been measured. The sodium atoms in the 4D state have been produced by two-photon excitation using cw laser radiation at 578.89 nm. Within a model which takes into account collisional population and depopulation of the 4F level as well as radiative relaxation (direct or cascade) of the 3D, 4P, 4D and 4F states ending in the 3P level, the rate for the Na.4D / ! Na.4F / collisional transfer turns out to be related to the ratio of the steady-state populations created in 3D and 4D states. They have been determined by measuring the fluorescence intensities of the 3D! 3P and 4D! 3P transitions. The measurements yield the following cross section values for thoseAbstract. The cross sections for the Na.4D/! Na.4F / excitation energy transfer induced by collisions with He, Ar and Na ground-state atoms have been measured. The sodium atoms in the 4D state have been produced by two-photon excitation using cw laser radiation at 578.89 nm. Within a model which takes into account collisional population and depopulation of the 4F level as well as radiative relaxation (direct or cascade) of the 3D, 4P, 4D and 4F states ending in the 3P level, the rate for the Na.4D / ! Na.4F / collisional transfer turns out to be related to the ratio of the steady-state populations created in 3D and 4D states. They have been determined by measuring the fluorescence intensities of the 3D! 3P and 4D! 3P transitions. The measurements yield the following cross section values for those

Jan 1, 19970 citations

COOLING OR HEATING OF AN ATOMIC VAPOR USING COLLISIONALLY AIDED LASER EXCITATION

E. Giacobino, P. R. Berman, H. Henry Stroke +2 more

In this paper, we study the collisions in the presence of a laser field from a novel point of view, considering the exchange of energy between the electromagnetic field and the atoms.

Le Journal de Physique ColloquesJan 1, 19850 citations

Excitation energy transfer by collisions in atomic vapour illuminated with laser light

Abstract

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Excitation energy transfer by collisions in atomic vapour illuminated with laser light

Abstract

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