title: Single-frequency Sb-based distributed-feedback lasers emitting at 2.3 microm above room temperature for application in tunable diode laser absorption spectroscopy.
abstract: GaInAsSb/GaAlAsSb/GaSb distributed-feedback (DFB) laser diodes based on a type I active region were fabricated by molecular beam epitaxy at the Centre d'Electronique et de Micro-Optoélectronique de Montpellier (CEM2). The DFB processing was done by Nanoplus Nanosystems and Technologies GmbH. The devices work in the continuous-wave regime above room temperature around an emission wavelength of 2.3 microm with a side-mode suppression ratio greater than 25 dB and as great as 10 mW of output power. The laser devices are fully characterized in terms of optical and electrical properties. Their tuning properties made them adaptable to tunable diode laser absorption spectroscopy because they exhibit more than 220 GHz of continuous tuning by temperature or current. The direct absorption of CH4 is demonstrated to be possible with high spectral selectivity.
authors.affiliation: Centre d'Electronique et de Micro-Optoélectronique de Montpellier, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5507, Place Eugène Bataillon, CC 67, Université Montpellier 2, France.
authors.forename: Abdelmagid
authors.initials: A
authors.lastname: Salhi
authors.forename: David
authors.initials: D
authors.lastname: Barat
authors.forename: Daniele
authors.initials: D
authors.lastname: Romanini
authors.forename: Yves
authors.initials: Y
authors.lastname: Rouillard
authors.forename: Aimeric
authors.initials: A
authors.lastname: Ouvrard
authors.forename: Ralph
authors.initials: R
authors.lastname: Werner
authors.forename: Jochen
authors.initials: J
authors.lastname: Seufert
authors.forename: Johannes
authors.initials: J
authors.lastname: Koeth
authors.forename: Aurore
authors.initials: A
authors.lastname: Vicet
authors.forename: Arnaud
authors.initials: A
authors.lastname: Garnache