AlGaAs/GaAs distributed feedback quantum cascade lasers

被引：0

作者：

Schrenk, W ^{[1
]}

Finger, N ^{[1
]}

Gianordoli, S ^{[1
]}

Strasser, G ^{[1
]}

Gornik, E ^{[1
]}

机构：

[1] Tech Univ Vienna, A-1060 Vienna, Austria

来源：

INFRARED APPLICATIONS OF SEMICONDUCTORS III | 2000年 / 607卷

关键词：

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the realization of distributed feedback quantum cascade lasers in the GaAs/AlGaAs material system. The use of a metallized surface relief grating for feedback allows a fabrication process without regrowth. A feature of this laser is that either single mode or double mode emission at lambda approximate to 10 mu m is achieved, which is typical for index coupled lasers. The coupling coefficient is measured from the mode spacing for double mode emission of a strong overcoupled laser to be kappa approximate to 24 cm(-1). The emission wavenumber can be continuously tuned with the temperature at a rate of d nu / dT approximate to 0.048 cm(-1)/K, which is in close agreement to the temperature dependence of the refractive index of GaAs.

引用

页码：141 / 146

页数：6

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