Enhanced spontaneous emission of CdSe quantum dots in monolithic II-VI pillar microcavities

Journal Article · Mon Aug 28 00:00:00 EDT 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2338800· OSTI ID:20883188

Lohmeyer, H; Kruse, C; Sebald, K; Gutowski, J; Hommel, D ^[1]

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1. 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, Vol. 89, Issue 9; Other Information: DOI: 10.1063/1.2338800; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM SELENIDES
CRYSTAL GROWTH
ION BEAMS
MAGNESIUM SULFIDES
MOLECULAR BEAM EPITAXY
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
SUPERLATTICES
ZINC SELENIDES