Share Email Print

Proceedings Paper

Widely tunable quantum cascade lasers for spectroscopic sensing
Author(s): J. Wagner; R. Ostendorf; J. Grahmann; A. Merten; S. Hugger; Jan Philip Jarvis; F. Fuchs; D. Boskovic; H. Schenk
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this paper recent advances in broadband-tuneable mid-infrared (MIR) external-cavity quantum cascade lasers (EC-QCL) technology are reported as well as their use in spectroscopic process analysis and imaging stand-off detection of hazardous substances, such as explosive and related precursors. First results are presented on rapid scan EC-QCL, employing a custom-made MOEMS scanning grating in Littrow-configuration as wavelength-selective optical feedback element. This way, a scanning rate of 1 kHz was achieved, which corresponds to 2000 full wavelength scans per second. Furthermore, exemplary case studies of EC-QCL based MIR spectroscopy will be presented. These include timeresolved analysis of catalytic reactions in chemical process control, as well as imaging backscattering spectroscopy for the detection of residues of explosives and related precursors in a relevant environment.

Paper Details

Date Published: 8 February 2015
PDF: 6 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937012 (8 February 2015); doi: 10.1117/12.2082794
Show Author Affiliations
J. Wagner, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
R. Ostendorf, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
J. Grahmann, Fraunhofer-Institut für Photonische Mikrosysteme (Germany)
A. Merten, Fraunhofer-Institut für Photonische Mikrosysteme (Germany)
S. Hugger, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Jan Philip Jarvis, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
F. Fuchs, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
D. Boskovic, Fraunhofer-Institut für Chemische Technologie (Germany)
H. Schenk, Fraunhofer-Institut für Photonische Mikrosysteme (Germany)

Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?