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URN: urn:nbn:de:swb:90-420829

Strongly confining bare core CdTe quantum dots in polymeric microdisk resonators

Flatae, A.; Grossmann, T.; Beck, T.; Wiegele, S.; Kalt, H.

We report on a simple route to the efficient coupling of optical emission from strongly confining bare core CdTe quantum dots (QDs) to the eigenmodes of a micro-resonator. The quantum emitters are embedded into QD/polymer sandwich microdisk cavities. This prevents photo-oxidation and yields the high dot concentration necessary to overcome Auger enhanced surface trapping of carriers. In combination with the very high cavity Q-factors, interaction of the QDs with the cavity modes in the weak coupling regime is readily observed. Under nanosecond pulsed excitation the CdTe QDs in the microdisks show lasing with a threshold energy as low as 0.33 μJ.

Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Publikationstyp Zeitschriftenaufsatz
Jahr 2014
Sprache Englisch
Identifikator ISSN: 2166-532X
KITopen ID: 1000042082
Erschienen in APL Materials
Band 2
Heft 1
Seiten 012107
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
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