Delay and distortion of slow light pulses by excitons in ZnO
2011 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 84, no 7, 075202- p.Article in journal (Refereed) Published
istortion 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.
Place, publisher, year, edition, pages
American Physical Society , 2011. Vol. 84, no 7, 075202- p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-69984DOI: 10.1103/PhysRevB.84.075202ISI: 000293327600005OAI: oai:DiVA.org:liu-69984DiVA: diva2:434006
T V Shubina, M M Glazov, N A Gippius, A A Toropov, D Lagarde, P Disseix, J Leymarie, B Gil, Galia Pozina, J Peder Bergman and Bo Monemar, Delay and distortion of slow light pulses by excitons in ZnO, 2011, Physical Review B. Condensed Matter and Materials Physics, (84), 7, 075202.
Copyright: American Physical Society