Effective utilization of quantum-cascade distributed-feedback lasers in absorption spectroscopy

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

doi:10.1364/AO.39.004425

Effective utilization of quantum-cascade distributed-feedback lasers in absorption spectroscopy

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

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

93 Scopus citations

Abstract

A variable duty cycle quasi-cw frequency scanning technique was applied to reduce thermal effects resulting from the high heat dissipation of type I quantum-cascade lasers. This technique was combined with a 100-m path-length multipass cell and a zero-air background-subtraction technique to enhance detection sensitivity to a parts-in-10⁹(ppb) concentration level for spectroscopic trace-gas detection of CH₄, N₂O, H₂O, and C₂H₅OH in ambient air at 7.9 μm. A new technique for analysis of dense highresolution absorption spectra was applied to detection of ethanol in ambient air, yielding a 125-ppb detection limit.

Original language	English (US)
Pages (from-to)	4425-4430
Number of pages	6
Journal	Applied Optics
Volume	39
Issue number	24
DOIs	https://doi.org/10.1364/AO.39.004425
State	Published - Aug 20 2000
Externally published	Yes

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.39.004425

Cite this

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title = "Effective utilization of quantum-cascade distributed-feedback lasers in absorption spectroscopy",

abstract = "A variable duty cycle quasi-cw frequency scanning technique was applied to reduce thermal effects resulting from the high heat dissipation of type I quantum-cascade lasers. This technique was combined with a 100-m path-length multipass cell and a zero-air background-subtraction technique to enhance detection sensitivity to a parts-in-109(ppb) concentration level for spectroscopic trace-gas detection of CH4, N2O, H2O, and C2H5OH in ambient air at 7.9 μm. A new technique for analysis of dense highresolution absorption spectra was applied to detection of ethanol in ambient air, yielding a 125-ppb detection limit.",

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

year = "2000",

month = aug,

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doi = "10.1364/AO.39.004425",

language = "English (US)",

volume = "39",

pages = "4425--4430",

journal = "Applied Optics",

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T1 - Effective utilization of quantum-cascade distributed-feedback lasers in absorption spectroscopy

AU - Kosterev, Anatoliy A.

AU - Curl, Robert F.

AU - Tittel, Frank K.

AU - Gmachl, Claire

AU - Capasso, Federico

AU - Sivco, Deborah L.

AU - Baillargeon, James N.

AU - Hutchinson, Albert L.

AU - Cho, Alfred Y.

PY - 2000/8/20

Y1 - 2000/8/20

N2 - A variable duty cycle quasi-cw frequency scanning technique was applied to reduce thermal effects resulting from the high heat dissipation of type I quantum-cascade lasers. This technique was combined with a 100-m path-length multipass cell and a zero-air background-subtraction technique to enhance detection sensitivity to a parts-in-109(ppb) concentration level for spectroscopic trace-gas detection of CH4, N2O, H2O, and C2H5OH in ambient air at 7.9 μm. A new technique for analysis of dense highresolution absorption spectra was applied to detection of ethanol in ambient air, yielding a 125-ppb detection limit.

AB - A variable duty cycle quasi-cw frequency scanning technique was applied to reduce thermal effects resulting from the high heat dissipation of type I quantum-cascade lasers. This technique was combined with a 100-m path-length multipass cell and a zero-air background-subtraction technique to enhance detection sensitivity to a parts-in-109(ppb) concentration level for spectroscopic trace-gas detection of CH4, N2O, H2O, and C2H5OH in ambient air at 7.9 μm. A new technique for analysis of dense highresolution absorption spectra was applied to detection of ethanol in ambient air, yielding a 125-ppb detection limit.

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EP - 4430

JO - Applied Optics

JF - Applied Optics

IS - 24

ER -

Effective utilization of quantum-cascade distributed-feedback lasers in absorption spectroscopy

Abstract

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