Regensburg 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HL: Fachverband Halbleiterphysik
HL 80: II-VI-compounds other than ZnO
HL 80.5: Vortrag
Donnerstag, 14. März 2013, 12:45–13:00, H15
Control of the spontaneous emission of CdTe QDs by means of micropillar cavities — •Tomasz Jakubczyk1,2, Wojciech Pacuski1,2, Tomasz Smoleński1, Matthias Florian3, Frank Jahnke3, Carsten Kruse2, Piotr Kossacki1, and Detlef Hommel2 — 1Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Poland — 2Institute of Theoretical Physics, University of Bremen, Germany — 3Institute of Solid State Physics, University of Bremen, Germany
Pillar microcavities containing quantum dots (QDs) represent an excellent tool for exploring and enhancing effects due to the light-matter interaction in semiconductor structures. We present results prooving a significant improvement of the control over the spontaneous emission of CdTe/ZnTe QDs by means of an all-epitaxial ZnTe-based pillar cavity.
We investigated QD’s excitonic emission near resonance with the fundamental micropillar cavity mode. Temperature variation of the detuning between the exciton energy and the cavity mode was performed and a significant shortening of the decay time for the QD state was found at zero-detuning. A Purcell factor over 5 was determined and confirmed by the extended transfer matrix method calculations.