Continuous wave operation of quantum cascade lasers

Beck, Mattias; Hofstetter, Daniel; Aellen, Thierry; Blaser, Stéphane; Faist, Jérôme; Oesterle, Ursula; Gini Emilio

doi:10.1016/S0022-0248(02)02424-7

Continuous wave operation of quantum cascade lasers

Author(s)

Beck, Mattias

Hofstetter, Daniel

Laboratoire temps-fréquence

Aellen, Thierry

Blaser, Stéphane

Faist, Jérôme

Oesterle, Ursula

Gini Emilio

Date issued

2003

In

Journal of Crystal Growth, Elsevier, 2003/251/1-4/697-700

Subjects

A1. Intersubband A3. Molecular beam epitaxy B3. Quantum cascade laser

Abstract

Continuous wave (CW) operation of quantum cascade lasers is reported up to temperatures of 312 K. The devices were fabricated as buried heterostructure lasers and episide-down mounted for improved heat dissipation. Fabry–Perot lasers emitted 17 mW of continuous optical power at 292 K and still 3 mW at 311 K at λ=9.12 μm. Distributed feedback quantum cascade lasers showed CW single-mode operation up to 260 K at λ=9.0 μm with a side mode suppression rate better than 30 dB.