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Optical Engineering • Open Access

Surface emitting ring quantum cascade lasers for chemical sensing
Author(s): Rolf Szedlak; Jakob Hayden; Pedro Martín-Mateos; Martin Holzbauer; Andreas Harrer; Benedikt Schwarz; Borislav Hinkov; Donald MacFarland; Tobias Zederbauer; Hermann Detz; Aaron Maxwell Andrews; Werner Schrenk; Pablo Acedo; Bernhard Lendl; Gottfried Strasser

Paper Abstract

We review recent advances in chemical sensing applications based on surface emitting ring quantum cascade lasers (QCLs). Such lasers can be implemented in monolithically integrated on-chip laser/detector devices forming compact gas sensors, which are based on direct absorption spectroscopy according to the Beer–Lambert law. Furthermore, we present experimental results on radio frequency modulation up to 150 MHz of surface emitting ring QCLs. This technique provides detailed insight into the modulation characteristics of such lasers. The gained knowledge facilitates the utilization of ring QCLs in combination with spectroscopic techniques, such as heterodyne phase-sensitive dispersion spectroscopy for gas detection and analysis.

Paper Details

Date Published: 1 September 2017
PDF: 5 pages
Opt. Eng. 57(1) 011005 doi: 10.1117/1.OE.57.1.011005
Published in: Optical Engineering Volume 57, Issue 1
Show Author Affiliations
Rolf Szedlak, Technische Univ. Wien (Austria)
Jakob Hayden, Technische Univ. Wien (Austria)
Pedro Martín-Mateos, Univ. Carlos III de Madrid (Spain)
Martin Holzbauer, Technische Univ. Wien (Austria)
Andreas Harrer, Technische Univ. Wien (Austria)
Benedikt Schwarz, Technische Univ. Wien (Austria)
Borislav Hinkov, Technische Univ. Wien (Austria)
Donald MacFarland, Technische Univ. Wien (Austria)
Tobias Zederbauer, Technische Univ. Wien (Austria)
Hermann Detz, Austrian Academy of Sciences (Austria)
Aaron Maxwell Andrews, Technische Univ. Wien (Austria)
Werner Schrenk, Technische Univ. Wien (Austria)
Pablo Acedo, Univ. Carlos III de Madrid (Spain)
Bernhard Lendl, Technische Univ. Wien (Austria)
Gottfried Strasser, Technische Univ. Wien (Austria)

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