Observations of near-zero linewidth enhancement factor in a quantum-well coupled quantum-dot laser

被引：71

作者：

Kondratko, PK ^{[1
]}

Chuang, SL ^{[1
]}

Walter, G ^{[1
]}

Chung, T ^{[1
]}

Holonyak, N ^{[1
]}

机构：

[1] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 23期

关键词：

D O I：

10.1063/1.1631397

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Amplified spontaneous emission (ASE) measurements of a quantum-well coupled quantum-dot (QW-QD) laser are investigated in our experimental study. Fabry-Perot ASE spectrum taken below threshold of this device allows the extraction of gain, index of refraction change, and linewidth enhancement factor. Our experimental study includes continuous wave and pulsed measurements. The QW-QD laser consists of an auxiliary QW which assists in carrier collection while tunneling of carriers takes place from the well to the dot region. Our experimental analysis reveals a low linewidth enhancement factor of 0.15 over a flat spectrum for these GaAs-InGaAs-InAs QW-QD lasers. (C) 2003 American Institute of Physics.

引用

页码：4818 / 4820

页数：3

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