EXCITONIC EFFECTS IN GAIN AND INDEX IN GAALAS QUANTUM-WELL LASERS

被引：20
|
作者：
KESLER, MP
HARDER, C
机构：
[1] IBM Research Division, Zurich Research Laboratory
来源：
APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 02期
关键词：
D O I：
10.1063/1.103962
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Spontaneous emission and gain measurements in GaAlAs single quantum well lasers are presented. The gain is derived from the spontaneous emission detected through an opening in the top metallic contact of the lasers. Excitonic effects are seen in the gain (absorption) spectra for low carrier densities, and the step-like nature of the two-dimensional density of states is evident. From the gain spectra, refractive index changes are derived via a Kramers-Kronig transformation, and this is used to evaluate the linewidth enhancement factor as a function of photon energy.
引用
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页码：123 / 125
页数：3
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