Spectroscopy in the gas phase with GaAs/AlGaAs quantum-cascade lasers

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

doi:10.1364/AO.39.006926

Spectroscopy in the gas phase with GaAs/AlGaAs quantum-cascade lasers

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

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate what we believe is the first application of the recently developed electrically pumped GaAs/AlGaAs quantum-cascade lasers in a spectroscopic gas-sensing system by use of hollow waveguides. Laser light with an emission maximum at 10.009 mm is used to investigate the midinfrared absorption of ethene at atmospheric pressure. We used a 434-μm-long silver-coated silica hollow waveguide as a sensing element, which served as a gas absorption cell. Different mixtures of helium and ethene with known concentrations are flushed through the waveguide while the laser radiation that passes through the waveguide is analyzed with a Fourier-transform infrared spectrometer. The experimentally obtained discrete ethene spectrum agrees well with the calculated spectrum. A detection threshold of 250 parts per million is achieved with the current setup.

Original language	English
Pages (from-to)	6926-6930
Number of pages	5
Journal	Applied Optics
Volume	39
Issue number	36
DOIs	https://doi.org/10.1364/AO.39.006926
State	Published - 20 Dec 2000

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title = "Spectroscopy in the gas phase with GaAs/AlGaAs quantum-cascade lasers",

abstract = "We demonstrate what we believe is the first application of the recently developed electrically pumped GaAs/AlGaAs quantum-cascade lasers in a spectroscopic gas-sensing system by use of hollow waveguides. Laser light with an emission maximum at 10.009 mm is used to investigate the midinfrared absorption of ethene at atmospheric pressure. We used a 434-μm-long silver-coated silica hollow waveguide as a sensing element, which served as a gas absorption cell. Different mixtures of helium and ethene with known concentrations are flushed through the waveguide while the laser radiation that passes through the waveguide is analyzed with a Fourier-transform infrared spectrometer. The experimentally obtained discrete ethene spectrum agrees well with the calculated spectrum. A detection threshold of 250 parts per million is achieved with the current setup.",

author = "Lubos Hvozdara and Stefan Gianordoli and Gottfried Strasser and Werner Schrenk and Karl Unterrainer and Erich Gornik and Murthy, {Chavali S.S.S.} and Martin Kraft and Viktor Pustogow and Boris Mizaikoff and Alexandra Inberg and Nathan Croitoru",

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doi = "10.1364/AO.39.006926",

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T1 - Spectroscopy in the gas phase with GaAs/AlGaAs quantum-cascade lasers

AU - Hvozdara, Lubos

AU - Gianordoli, Stefan

AU - Strasser, Gottfried

AU - Schrenk, Werner

AU - Unterrainer, Karl

AU - Gornik, Erich

AU - Murthy, Chavali S.S.S.

AU - Kraft, Martin

AU - Pustogow, Viktor

AU - Mizaikoff, Boris

AU - Inberg, Alexandra

AU - Croitoru, Nathan

PY - 2000/12/20

Y1 - 2000/12/20

N2 - We demonstrate what we believe is the first application of the recently developed electrically pumped GaAs/AlGaAs quantum-cascade lasers in a spectroscopic gas-sensing system by use of hollow waveguides. Laser light with an emission maximum at 10.009 mm is used to investigate the midinfrared absorption of ethene at atmospheric pressure. We used a 434-μm-long silver-coated silica hollow waveguide as a sensing element, which served as a gas absorption cell. Different mixtures of helium and ethene with known concentrations are flushed through the waveguide while the laser radiation that passes through the waveguide is analyzed with a Fourier-transform infrared spectrometer. The experimentally obtained discrete ethene spectrum agrees well with the calculated spectrum. A detection threshold of 250 parts per million is achieved with the current setup.

AB - We demonstrate what we believe is the first application of the recently developed electrically pumped GaAs/AlGaAs quantum-cascade lasers in a spectroscopic gas-sensing system by use of hollow waveguides. Laser light with an emission maximum at 10.009 mm is used to investigate the midinfrared absorption of ethene at atmospheric pressure. We used a 434-μm-long silver-coated silica hollow waveguide as a sensing element, which served as a gas absorption cell. Different mixtures of helium and ethene with known concentrations are flushed through the waveguide while the laser radiation that passes through the waveguide is analyzed with a Fourier-transform infrared spectrometer. The experimentally obtained discrete ethene spectrum agrees well with the calculated spectrum. A detection threshold of 250 parts per million is achieved with the current setup.

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SN - 1559-128X

VL - 39

SP - 6926

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JO - Applied Optics

JF - Applied Optics

IS - 36

ER -

Spectroscopy in the gas phase with GaAs/AlGaAs quantum-cascade lasers

Abstract

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