Active photonic crystal terahertz laser

被引：38

作者：

Benz, A. ^{[1
,2
]}

Deutsch, Ch. ^{[1
,2
]}

Fasching, G. ^{[1
,2
]}

Unterrainer, K. ^{[1
,2
]}

Andrews, A. M. ^{[2
,3
]}

Klang, P. ^{[2
,3
]}

Schrenk, W. ^{[2
,3
]}

Strasser, G. ^{[2
,3
]}

机构：

[1] Vienna Univ Technol, Photon Inst, A-1040 Vienna, Austria

[2] Vienna Univ Technol, Ctr Micro & Nanostruct, A-1040 Vienna, Austria

[3] Vienna Univ Technol, Inst Solid State Elect, A-1040 Vienna, Austria

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 02期

基金：

奥地利科学基金会;

关键词：

QUANTUM-CASCADE LASERS;

D O I：

10.1364/OE.17.000941

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the design and the realization of active photonic crystal (PhC) semiconductor lasers. The PhC consists of semiconductor nanostructure pillars which provide gain at a quantized transition energy. The vertical layer sequence is that of a terahertz quantum cascade laser. Thereby, the artificial crystal itself provides the optical gain and the lateral confinement. The cavities do not rely on a central defect, the lasing is observed in flat-band regions at high symmetry points. The experimental results are in excellent agreement with the finite-difference time-domain simulations. For the vertical confinement a double-metal waveguide is used. The lasers are showing a stable single-mode emission under all driving conditions. Varying the period of the PhC allows to tune the frequency by 400 GHz. (C) 2008 Optical Society of America

引用

页码：941 / 946

页数：6

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