Auteur(s): Shubina T. V., Glasov M.M., Gippius Nikolay A., Toropov A.A., Lagarde David, Disseix Pierre, Leymarie Joël, Gil B., Pozina G., P. Bergman J., Monemar B.
(Article) Publié:
-Physical Review B Condensed Matter And Materials Physics (1998-2015), vol. 84 p.075202 (2011)
Texte intégral en Openaccess : 
Ref HAL: hal-00633626_v1
DOI: 10.1103/PhysRevB.84.075202
WoS: 000412130700005
Exporter : BibTex | endNote
17 Citations
Résumé:
Distortion of light pulses in ZnO caused by both bound and free excitons is demonstrated by time-of-flight spectroscopy. Numerous lines of bound excitons dissect the pulse spectrum and induce slowdown of light propagation around the dips. Exciton-polariton resonances determine the overall pulse delay, which approaches 1.6 ns at 3.374 eV for a 0.3 mm propagation length, as well as the pulse curvature in the time-energy plane and its attenuation. Analysis of cw and time-resolved data yields the excitonic parameters inherent for bulk ZnO. A discrepancy is found between these bulk parameters and those given by surface-probing techniques.