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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