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Gain characteristics of InAs/GaAs self-organized quantum-dot lasers

被引：17
作者：
Harris, L
Ashmore, AD
Mowbray, DJ [1 ]
Skolnick, MS
Hopkinson, M
Hill, G
Clark, J
机构：
[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England
[2] Univ Sheffield, Dept Elect & Elect Engn, EPSRC Cent Facil 3 5 Semicond, Sheffield S1 3JD, S Yorkshire, England
来源：
APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 22期
关键词：
D O I：
10.1063/1.125372
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report a study of the gain characteristics of a self-organized InAs/GaAs quantum-dot laser. Using the Hakki-Paoli technique, we are able to determine the spectral form of the modal gain, its dependence upon current, and the differential gain. A quasiperiodic modulation of the below-threshold gain is observed. This modulation is shown to be responsible for the form of the lasing spectra, which consist of groups of lasing modes separated by nonlasing spectral regions. Possible mechanisms for this behavior are discussed. (C) 1999 American Institute of Physics. [S0003-6951(99)01548-X].
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页码：3512 / 3514
页数：3
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