title: CO and CO2 spectroscopy using a 60 nm broadband tunable MEMS-VCSEL at approximately 1.55 microm.
abstract: The spectroscopic application of a new broadband microelectromechanical-system-tunable vertical cavity surface-emitting laser with single-mode coverage of 60 nm (245 cm(-1)) in a single, continuous sweep is described. The operation of the device is illustrated with high-resolution spectra of CO and CO2 over 110 cm(-1) (27 nm) and 67 cm(-1) (17 nm), respectively, with the CO band shown for high-pressure scans between 1 and 3 bars (0.1-0.3 MPa). The achieved tuning range opens up new opportunities for tunable diode laser absorption spectroscopy. The spectra were compared with HITRAN-derived model calculations. The benefits of a sensor based on this laser are greater speed, laser power, and tuning range.
authors.affiliation: Institute of Chemical Engineering, Vienna University of Technology, Getreidemarkt, Wien, Austria. lackner@mail.zserv.tuwien.ac.at
authors.forename: Maximilian
authors.initials: M
authors.lastname: Lackner
authors.forename: Michael
authors.initials: M
authors.lastname: Schwarzott
authors.forename: Franz
authors.initials: F
authors.lastname: Winter
authors.forename: Benjamin
authors.initials: B
authors.lastname: Kögel
authors.forename: Sandro
authors.initials: S
authors.lastname: Jatta
authors.forename: Hubert
authors.initials: H
authors.lastname: Halbritter
authors.forename: Peter
authors.initials: P
authors.lastname: Meissner