Angular emission characteristics of quantum cascade spiral microlasers

被引：22

作者：

Hentschel, Martina ^{[1
]}

Kwon, Tae-Yoon ^{[1
]}

Belkin, Mikhail A. ^{[2
]}

Audet, Ross ^{[2
]}

Capasso, Federico ^{[2
]}

机构：

[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[2] Harvard Univ, Harvard Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 12期

关键词：

UNIDIRECTIONAL LASER-EMISSION; DIRECTIONAL EMISSION; MODES;

D O I：

10.1364/OE.17.010335

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We perform ray and wave simulations of passive and active spiral-shaped optical microcavities, comparing our results to experimental data obtained with mid-infrared quantum cascade spiral microlasers. Focusing on the angular emission characteristics, we find that both ray and wave simulations are consistent with the experimental data, showing richly-featured, multidirectional far-field emission patterns in the case of uniform pumping and TM-polarized light. Active cavity simulations using the Schrodinger-Bloch model indicate that selective pumping of the quantum cascade spiral microlasers near the resonator boundary will yield unidirectional laser emission. (c) 2009 Optical Society of America

引用

页码：10335 / 10343

页数：9

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