Trace-gas detection in ambient air with a thermoelectrically cooled, pulsed quantum-cascade distributed feedback laser

Anatoliy A. Kosterev; Frank K. Tittel; Claire F. Gmachl; Federico Capasso; Deborah L. Sivco; James N. Baillargeon; Albert L. Hutchinson; Alfred Y. Cho

doi:10.1364/AO.39.006866

Trace-gas detection in ambient air with a thermoelectrically cooled, pulsed quantum-cascade distributed feedback laser

Anatoliy A. Kosterev, Frank K. Tittel, Claire F. Gmachl, Federico Capasso, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Alfred Y. Cho

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

92 Scopus citations

Abstract

A pulsed quantum-cascade distributed feedback laser operating at near room temperature was used for sensitive high-resolution IR absorption spectroscopy of ambient air at a wavelength of ˜8 mm. Neartransform- limited laser pulses were obtained owing to short (˜5-ns) current pulse excitation and optimized electrical coupling. Fast and slow computer-controlled frequency scanning techniques were implemented and characterized. Fast computer-controlled laser wavelength switching was used to acquire second-derivative absorption spectra. The minimum detectable absorption was found to be 3 × 10⁻⁴ with 10⁵ laser pulses (20-kHz repetition rate), and 1.7 × 10⁻⁴ for 5 × 10⁵ pulses, based on the standard deviation of the linear regression analysis.

Original language	English (US)
Pages (from-to)	6866-6872
Number of pages	7
Journal	Applied Optics
Volume	39
Issue number	36
DOIs	https://doi.org/10.1364/AO.39.006866
State	Published - Dec 20 2000

All Science Journal Classification (ASJC) codes

Engineering (miscellaneous)
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1364/AO.39.006866

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title = "Trace-gas detection in ambient air with a thermoelectrically cooled, pulsed quantum-cascade distributed feedback laser",

abstract = "A pulsed quantum-cascade distributed feedback laser operating at near room temperature was used for sensitive high-resolution IR absorption spectroscopy of ambient air at a wavelength of ˜8 mm. Neartransform- limited laser pulses were obtained owing to short (˜5-ns) current pulse excitation and optimized electrical coupling. Fast and slow computer-controlled frequency scanning techniques were implemented and characterized. Fast computer-controlled laser wavelength switching was used to acquire second-derivative absorption spectra. The minimum detectable absorption was found to be 3 × 10−4 with 105 laser pulses (20-kHz repetition rate), and 1.7 × 10−4 for 5 × 105 pulses, based on the standard deviation of the linear regression analysis.",

author = "Kosterev, {Anatoliy A.} and Tittel, {Frank K.} and Gmachl, {Claire F.} and Federico Capasso and Sivco, {Deborah L.} and Baillargeon, {James N.} and Hutchinson, {Albert L.} and Cho, {Alfred Y.}",

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doi = "10.1364/AO.39.006866",

language = "English (US)",

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T1 - Trace-gas detection in ambient air with a thermoelectrically cooled, pulsed quantum-cascade distributed feedback laser

AU - Kosterev, Anatoliy A.

AU - Tittel, Frank K.

AU - Gmachl, Claire F.

AU - Capasso, Federico

AU - Sivco, Deborah L.

AU - Baillargeon, James N.

AU - Hutchinson, Albert L.

AU - Cho, Alfred Y.

PY - 2000/12/20

Y1 - 2000/12/20

N2 - A pulsed quantum-cascade distributed feedback laser operating at near room temperature was used for sensitive high-resolution IR absorption spectroscopy of ambient air at a wavelength of ˜8 mm. Neartransform- limited laser pulses were obtained owing to short (˜5-ns) current pulse excitation and optimized electrical coupling. Fast and slow computer-controlled frequency scanning techniques were implemented and characterized. Fast computer-controlled laser wavelength switching was used to acquire second-derivative absorption spectra. The minimum detectable absorption was found to be 3 × 10−4 with 105 laser pulses (20-kHz repetition rate), and 1.7 × 10−4 for 5 × 105 pulses, based on the standard deviation of the linear regression analysis.

AB - A pulsed quantum-cascade distributed feedback laser operating at near room temperature was used for sensitive high-resolution IR absorption spectroscopy of ambient air at a wavelength of ˜8 mm. Neartransform- limited laser pulses were obtained owing to short (˜5-ns) current pulse excitation and optimized electrical coupling. Fast and slow computer-controlled frequency scanning techniques were implemented and characterized. Fast computer-controlled laser wavelength switching was used to acquire second-derivative absorption spectra. The minimum detectable absorption was found to be 3 × 10−4 with 105 laser pulses (20-kHz repetition rate), and 1.7 × 10−4 for 5 × 105 pulses, based on the standard deviation of the linear regression analysis.

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Trace-gas detection in ambient air with a thermoelectrically cooled, pulsed quantum-cascade distributed feedback laser

Abstract

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