Open AccessTheory and experiment of submonolayer quantum-dot metal-cavity surface-emitting microlasers
Author(s) -
Pengfei Qiao,
Chien-Yao Lu,
D. Bimberg,
Shun Lien Chuang
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.030336
Subject(s) - lasing threshold , quantum dot , materials science , radius , quantum dot laser , optoelectronics , optics , laser , spontaneous emission , quantum optics , semiconductor laser theory , physics , semiconductor , computer security , computer science
We present a theoretical model for metal-cavity submonolayer quantum-dot surface-emitting microlasers, which operate at room temperature under electrical injection. Size-dependent lasing characteristics are investigated experimentally and theoretically with device radius ranging from 5 μm to 0.5 μm. The quantum dot emission and cavity optical properties are used in a rate-equation model to study the laser light output power vs. current behavior. Our theory explains the observed size-dependent physics and provides a guide for future device size reduction.