Surface-emitting distributed feedback quantum-cascade lasers

被引：52
作者：
Schrenk, W [1 ]
Finger, N [1 ]
Gianordoli, S [1 ]
Hvozdara, L [1 ]
Strasser, G [1 ]
Gornik, E [1 ]
机构：
[1] Vienna Tech Univ, Mikrostrukturzentrum, Inst Festkorperelektron, A-1040 Vienna, Austria
来源：
APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 14期
关键词：
D O I：
10.1063/1.1313807
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the realization of second-order distributed feedback quantum-cascade lasers at lambda=9.35 mu m, where the active region consists of GaAs, AlGaAs, and strained InGaAs grown on GaAs. A metal-stripe surface grating structure allows a high surface emission efficiency for the TM-polarized light. The emitted power via the surface is in the range of 100 mW and exceeds the emitted power from one facet. A double-lobed surface-emission far-field pattern is obtained for the lasing mode. The single-mode emission wavelength is continuously tunable by the heat sink temperature. (C) 2000 American Institute of Physics. [S0003-6951(00)00340-5].
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页码：2086 / 2088
页数：3
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