Lasing in GaAs/AlGaAs self-assembled quantum dots

被引：40

作者：

Mano, T.

Kuroda, T.

Yamagiwa, M.

Kido, G.

Sakoda, K.

Koguchi, N.

机构：

[1] Natl Inst Mat Sci, Quantum Dot Res Ctr, Tsukuba, Ibaraki 3050047, Japan

[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 305, Japan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 18期

关键词：

D O I：

10.1063/1.2372448

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors have demonstrated photopumped laser action of self-assembled ring-shaped GaAs quantum dots (QDs) grown by droplet epitaxy. Morphological control of the QD shape from conelike dots to ringlike ones results in a narrow spectral band of photoluminescence from the QD ensemble, reflecting their small size distribution. Using ring-shaped QDs as an active laser medium, they observed multimodal stimulated emissions from the ground state at temperatures of up to 300 K. (c) 2006 American Institute of Physics.

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页数：3

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