title: Wavelength modulation spectroscopy with a widely tunable InP-based 2.3 microm vertical-cavity surface-emitting laser.
abstract: We report on the successful application of recently developed 2.3 microm InP-based vertical-cavity surface-emitting lasers with a buried tunnel junction in a wavelength modulation spectroscopy measurement for carbon monoxide (CO) detection. The electrically pumped devices operate at room temperature under cw operation with stable single-mode emission and should allow for parts in 10(6) (ppm) level resolution measurement of CO with a standard optical setup.
authors.affiliation: Siemens Corporate Technology, Power and Sensor Systems, Munich, Germany. andreas.hangauer@wsi.tum.de
authors.forename: Andreas
authors.initials: A
authors.lastname: Hangauer
authors.forename: Jia
authors.initials: J
authors.lastname: Chen
authors.forename: Rainer
authors.initials: R
authors.lastname: Strzoda
authors.forename: Markus
authors.initials: M
authors.lastname: Ortsiefer
authors.forename: Markus-Christian
authors.initials: MC
authors.lastname: Amann