Enhanced spontaneous emission of CdSe quantum dots in monolithic II-VI pillar microcavities
- Institute of Solid State Physics, University of Bremen, Postfach 330 440, 28334 Bremen (Germany)
The emission properties of CdSe/ZnSe quantum dots in ZnSe-based pillar microcavities are studied. All-epitaxial cavities made of ZnSSe and MgS/ZnCdSe superlattices with a single quantum-dot sheet embedded have been grown by molecular beam epitaxy. Pillar structures with diameters down to 500 nm have been realized by focused-ion-beam etching. A pronounced enhancement of the spontaneous emission rate of quantum dots coupling to the fundamental mode of the cavities is found as evidence for the Purcell effect. The enhancement by a factor of up to 3.8 depends systematically on the pillar diameter and thus on the Purcell factor of the individual pillars.
- OSTI ID:
- 20883188
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 9 Vol. 89; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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