Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Dynamics of the bleaching of tail states in CdS1–xSex mixed crystals

Not Accessible

Your library or personal account may give you access

Abstract

The kinetics of excitons localized by statistic potential fluctuations have been studied in CdS1–xSex ternary alloys under quasi-stationary excitation conditions and have been time resolved after picosecond-pulse excitation. In luminescence experiments we observe the filling of the band tail with rising excitation intensity. The reduction of carrier density with time by recombination leads to a red shift of the luminescence band after picosecond-pulse excitation. Bleaching of absorption of the localized states is found in pump–probe experiments. Its dynamics depend on the localization depth of the excitons and on the pump-pulse energy. Using higher excitation intensities, we observe stimulated emission in luminescence, correlated with significant changes in the behavior of the absorption bleaching. The possible origin of the stimulated emission situated in the spectral region of localized states is discussed.

© 1996 Optical Society of America

Full Article  |  PDF Article
More Like This
Radiative recombination processes in wide-band-gap II–VI quantum wells: the interplay between excitons and free carriers

R. Cingolani, L. Calcagnile, G. Colí, R. Rinaldi, M. Lomoscolo, M. DiDio, A. Franciosi, L. Vanzetti, G. C. LaRocca, and D. Campi
J. Opt. Soc. Am. B 13(6) 1268-1277 (1996)

Coherent dynamics of excitons and excitonic complexes in ZnSe epilayers

U. Neukirch, D. Weckendrup, K. Wundke, J. Gutowski, and D. Hommel
J. Opt. Soc. Am. B 13(6) 1256-1262 (1996)

Exciton–exciton interaction under elliptically polarized light excitation

D. Robart, T. Amand, X. Marie, M. Brousseau, J. Barrau, and G. Bacquet
J. Opt. Soc. Am. B 13(5) 1000-1008 (1996)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved