Gas absorption spectroscopy using GaAs/AlGaAs quantum cascade lasers and a hollow waveguide absorption cell

Lubos Hvozdara; Stefan Gianordoli; Gottfried Strasser; Werner Schrenk; Karl Unterrainer; Erich Gornik; V. V. Pustogov; Chavali S. S. S. Murthy; Martin Kraft; Boris Mizaikoff; Alexandra Inberg; Nathan I. Croitoru

doi:10.1117/12.417417

1 March 2001 Gas absorption spectroscopy using GaAs/AlGaAs quantum cascade lasers and a hollow waveguide absorption cell

Lubos Hvozdara, Stefan Gianordoli, Gottfried Strasser, Werner Schrenk, Karl Unterrainer, Erich Gornik, V. V. Pustogov, Chavali S. S. S. Murthy, Martin Kraft, Boris Mizaikoff, Alexandra Inberg, Nathan I. Croitoru

Author Affiliations +

Proceedings Volume 4204, Fiber Optic Sensor Technology II; (2001) https://doi.org/10.1117/12.417417
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States

Abstract

In this contribution, the first application of the recently developed GaAs/AlGaAs quantum cascade lasers and hollow waveguides in gas sensing spectroscopy is demonstrated. A multimode GaAs/AlGaAs quantum cascade laser tuned to an emission maximum at 10.009 ?m is used to investigate a mid-infrared absorption of ethene at atmospheric pressure. The laser radiation is focused onto the entrance of a 434 mm long, gas-tight terminated hollow waveguide and it is collected after passing it. Well defined mixtures with ten different concentrations of helium and ethene are flushed through the waveguide. The radiation is analyzed using a Fourier-transform infrared spectrometer (FTIR) equipped with a mercurycadmium- telluride detector. The obtained discrete ethene spectrum is compared to a calculated spectrum finding a good agreement. A detection threshold of 250 ppm and a response time in the range of 100 ms have been obtained with the current setup.

Citation Download Citation

Lubos Hvozdara, Stefan Gianordoli, Gottfried Strasser, Werner Schrenk, Karl Unterrainer, Erich Gornik, V. V. Pustogov, Chavali S. S. S. Murthy, Martin Kraft, Boris Mizaikoff, Alexandra Inberg, and Nathan I. Croitoru "Gas absorption spectroscopy using GaAs/AlGaAs quantum cascade lasers and a hollow waveguide absorption cell", Proc. SPIE 4204, Fiber Optic Sensor Technology II, (1 March 2001); https://doi.org/10.1117/12.417417

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available