Dynamics of the Optical Excitation—Deexcitation Cycle of O<sub>2</sub><sup>−</sup> Centers in KCl

Schwan, L. O.; Florian, Reinhold; Schmid, Dirk; Betz, E.; Schrof, Wolfgang; Walker, Brent; Port, H.

doi:10.1002/pssb.2221240233

Cited by 10 publications

(1 citation statement)

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“…Since 1982 several papers on superfluorescence of KC1: 0; have been published [5] and also laser action has been reported on this system [6]. Up to now luminescence decay times as a function of temperature are reported for the three systems KC1: 0; [7], KI: Se; [8], and KI: S; [9]. Further the low temperature pure radiative decay time has been published for KCl: O;, KI: S;, RbBr: O;, and CsBr: 0; by Treshchalov and Rebane in connection with studies of centre reorientation in the relaxed excited state [lo].…”

Section: Introductionmentioning

confidence: 99%

The Lifetime of Excited O, S, Se, and Te Centres

Hessmann

Fischer

1991

Physica Status Solidi (b)

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The decay of photoluminescence of these chalcogen centres in alkali halides is purely exponential. The lifetimes being constant at low temperatures are strongly reduced as the temperature is raised above certain limits. Activation energies for thermal quenching are obtained and discussed within the frame of an anharmonic Franck-Condon model.Das Abklingen der Photolumineszenz dieser Chalkogenzentren in Alkalihalogeniden ist rein exponentiell. Die bei tiefen Temperaturen konstanten Lebensdauern werden stark verkurzt, wenn die Temperatur bestimmte Werte ubersteigt. Aktivierungsenergien fur thermisches Quenchen werden erhalten und im Rahmen eines anharmonischen Franck-Condon-Modells diskutiert.

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