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

被引：27

作者：

Lohmeyer, H. ^{[1
]}

Kruse, C. ^{[1
]}

Sebald, K. ^{[1
]}

Gutowski, J. ^{[1
]}

Hommel, D. ^{[1
]}

机构：

[1] Univ Bremen, Inst Solid State Phys, D-28334 Bremen, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 09期

关键词：

D O I：

10.1063/1.2338800

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (c) 2006 American Institute of Physics.

引用

页数：3

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