Self-aligned coupled cavity GaAs/AlGaAs midinfrared quantum-cascade laser

被引：29
|
作者：
Hvozdara, L
Lugstein, A
Gianordoli, S
Schrenk, W
Strasser, G
Unterrainer, K
Bertagnolli, E
Gornik, E
机构：
[1] TU Wien, Inst Festkorperelekt, A-1040 Vienna, Austria
[2] TU Wien, Mikrostrukturzentrum, A-1040 Vienna, Austria
来源：
APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 08期
关键词：
D O I：
10.1063/1.1289499
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A monolithic GaAs/AlGaAs quantum-cascade laser with self-aligned focused ion beam-cut coupled cavities, emitting in the range of lambda=9.4 mu m is demonstrated. Separate pulsing of two optically coupled laser sections enables control of the lasing in single-mode and in multimode regimes. Side mode suppression ratios better than 25 dB are shown. Mode control over two single modes spaced by 3.6 cm(-1) is presented. An optical output intensity modulation in a range of 20 dB is achieved. The laser exhibits a peak output power in the range of 180 mW at cryogenic temperatures. The observed mode spacing is in a good agreement with the calculation. (C) 2000 American Institute of Physics. [S0003-6951(00)02734-0].
引用
收藏
页码：1077 / 1079
页数：3
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