Photoacoustic spectroscopy using quantum-cascade lasers

B. A. Paldus; T. G. Spence; R. N. Zare; J. Oomens; F. J.M. Harren; D. H. Parker; C. Gmachl; F. Cappasso; D. L. Sivco; J. N. Baillargeon; A. L. Hutchinson; A. Y. Cho

doi:10.1364/OL.24.000178

Photoacoustic spectroscopy using quantum-cascade lasers

B. A. Paldus, T. G. Spence, R. N. Zare, J. Oomens, F. J.M. Harren, D. H. Parker, C. Gmachl, F. Cappasso, D. L. Sivco, J. N. Baillargeon, A. L. Hutchinson, A. Y. Cho

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

148 Scopus citations

Abstract

Photoacoustic spectra of ammonia and water vapor were recorded by use of a continuous-wave quantum-cascade distributed-feedback (QC-DFB) laser at 8.5 μmn with a 16-mW power output. The gases were flowed through a cell that was resonant at 1.6 kHz, and the QC-DFB source was temperature tuned over 35 nm for generation of spectra or was temperature stabilized on an absorption feature peak to permit real-time concentration measurements. A detection limit of 100 parts in 10⁹ by volume ammonia at standard temperature and pressure was obtained for a 1-Hz bandwidth in a measurement time of 10 min.

Original language	English (US)
Pages (from-to)	178-180
Number of pages	3
Journal	Optics Letters
Volume	24
Issue number	3
DOIs	https://doi.org/10.1364/OL.24.000178
State	Published - Feb 1 1999
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OL.24.000178

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title = "Photoacoustic spectroscopy using quantum-cascade lasers",

abstract = "Photoacoustic spectra of ammonia and water vapor were recorded by use of a continuous-wave quantum-cascade distributed-feedback (QC-DFB) laser at 8.5 μmn with a 16-mW power output. The gases were flowed through a cell that was resonant at 1.6 kHz, and the QC-DFB source was temperature tuned over 35 nm for generation of spectra or was temperature stabilized on an absorption feature peak to permit real-time concentration measurements. A detection limit of 100 parts in 109 by volume ammonia at standard temperature and pressure was obtained for a 1-Hz bandwidth in a measurement time of 10 min.",

author = "Paldus, \{B. A.\} and Spence, \{T. G.\} and Zare, \{R. N.\} and J. Oomens and Harren, \{F. J.M.\} and Parker, \{D. H.\} and C. Gmachl and F. Cappasso and Sivco, \{D. L.\} and Baillargeon, \{J. N.\} and Hutchinson, \{A. L.\} and Cho, \{A. Y.\}",

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doi = "10.1364/OL.24.000178",

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T1 - Photoacoustic spectroscopy using quantum-cascade lasers

AU - Paldus, B. A.

AU - Spence, T. G.

AU - Zare, R. N.

AU - Oomens, J.

AU - Harren, F. J.M.

AU - Parker, D. H.

AU - Gmachl, C.

AU - Cappasso, F.

AU - Sivco, D. L.

AU - Baillargeon, J. N.

AU - Hutchinson, A. L.

AU - Cho, A. Y.

PY - 1999/2/1

Y1 - 1999/2/1

N2 - Photoacoustic spectra of ammonia and water vapor were recorded by use of a continuous-wave quantum-cascade distributed-feedback (QC-DFB) laser at 8.5 μmn with a 16-mW power output. The gases were flowed through a cell that was resonant at 1.6 kHz, and the QC-DFB source was temperature tuned over 35 nm for generation of spectra or was temperature stabilized on an absorption feature peak to permit real-time concentration measurements. A detection limit of 100 parts in 109 by volume ammonia at standard temperature and pressure was obtained for a 1-Hz bandwidth in a measurement time of 10 min.

AB - Photoacoustic spectra of ammonia and water vapor were recorded by use of a continuous-wave quantum-cascade distributed-feedback (QC-DFB) laser at 8.5 μmn with a 16-mW power output. The gases were flowed through a cell that was resonant at 1.6 kHz, and the QC-DFB source was temperature tuned over 35 nm for generation of spectra or was temperature stabilized on an absorption feature peak to permit real-time concentration measurements. A detection limit of 100 parts in 109 by volume ammonia at standard temperature and pressure was obtained for a 1-Hz bandwidth in a measurement time of 10 min.

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Photoacoustic spectroscopy using quantum-cascade lasers

Abstract

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