Modelling of decay kinetics of self-trapped exciton luminescence in CdWO4 under femtosecond laser excitation in absorption saturation conditions

The analytical expressions for the three-dimensional spatial distribution of excitons and luminescence decay kinetics of wide band-gap crystals were derived taking into account the saturation effect for absorption near the centre of the incident laser beam with Gaussian transversal profile. The mode...

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Veröffentlicht in:	Central European journal of physics 2012-08, Vol.10 (4), p.1002-1008
Hauptverfasser:	Markov, Sergey, Nagirnyi, Vitali, Vasil’ev, Andrey, Makhov, Vladimir, Laasner, Raul, Vielhauer, Sebastian, Kirm, Marco, Grigonis, Rimantas, Sirutkaitis, Valdas
Format:	Artikel
Sprache:	eng
Schlagworte:	absorption saturation Biological and Medical Physics Biophysics dipole-dipole interaction Environmental Physics excitation density effects exciton-exciton interaction Geophysics/Geodesy Physical Chemistry Physics Physics and Astronomy Research Article
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Beschreibung
Zusammenfassung:	The analytical expressions for the three-dimensional spatial distribution of excitons and luminescence decay kinetics of wide band-gap crystals were derived taking into account the saturation effect for absorption near the centre of the incident laser beam with Gaussian transversal profile. The model is verified for the excitonic emission of CdWO 4 crystals under excitation by ultra-short laser pulses in the region of weak excitonic absorption.
ISSN:	1895-1082 2391-5471 1644-3608 2391-5471
DOI:	10.2478/s11534-012-0028-9