Rapid scan (Doppler-limited) absorption spectroscopy using mid-infrared quantum cascade lasers

Steven W. Sharpe; James F. Kelly; Richard M. Williams; John S. Hartman; Claire Gmachl; Federico Capasso; Deborah L. Sivco; James N. Baillargeon; Alfred Y. Cho

Rapid scan (Doppler-limited) absorption spectroscopy using mid-infrared quantum cascade lasers

Steven W. Sharpe, James F. Kelly, Richard M. Williams, John S. Hartman, Claire Gmachl, Federico Capasso, Deborah L. Sivco, James N. Baillargeon, Alfred Y. Cho

Research output: Contribution to journal › Conference article › peer-review

8 Scopus citations

Abstract

Laser characteristics have been evaluated for mid-infrared quantum-cascade (QC) lasers operating in a continuous mode at cryogenic temperatures. These tests were performed to determine the suitability of QC lasers for use in various spectroscopic applications, including Doppler-limited molecular absorption spectroscopy and pressure-limited LIDAR instrumentation. Using rapid-scanning techniques, direct absorbance measurements of nitric oxide (NO), ammonia (NH₃) and nitrous oxide (N₂O) have been performed with QC lasers, operating at either 5.2 or 8.5 μm. Measured Doppler-limited absorption profiles show no distortion with increased averaging (up to 10³-10⁴ samples averaged), thereby minimizing the need for sophisticated data acquisition systems which re-register successive data streams to accommodate for laser frequency jitter and drift. Additionally, the high tuning rates (2.5 cm^-1 in 0.6 milliseconds; 5-10 kHz sweep repetition rate) achieved with the QC lasers allow for the measure of relatively rapid transient phenomena or a high degree of signal averaging in a short time. Noise-equivalent absorbances of 3 × 10^-6 have also been obtained without optimizing the optical arrangement.

Original language	English (US)
Pages (from-to)	23-33
Number of pages	11
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3758
State	Published - 1999
Externally published	Yes
Event	Proceedings of the 1999 Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Processing Monitoring II - Denver, CO, USA Duration: Jul 19 1999 → Jul 20 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Cite this

@article{ef912917320f4b4abb4b10457379326c,

title = "Rapid scan (Doppler-limited) absorption spectroscopy using mid-infrared quantum cascade lasers",

abstract = "Laser characteristics have been evaluated for mid-infrared quantum-cascade (QC) lasers operating in a continuous mode at cryogenic temperatures. These tests were performed to determine the suitability of QC lasers for use in various spectroscopic applications, including Doppler-limited molecular absorption spectroscopy and pressure-limited LIDAR instrumentation. Using rapid-scanning techniques, direct absorbance measurements of nitric oxide (NO), ammonia (NH3) and nitrous oxide (N2O) have been performed with QC lasers, operating at either 5.2 or 8.5 μm. Measured Doppler-limited absorption profiles show no distortion with increased averaging (up to 103-104 samples averaged), thereby minimizing the need for sophisticated data acquisition systems which re-register successive data streams to accommodate for laser frequency jitter and drift. Additionally, the high tuning rates (2.5 cm-1 in 0.6 milliseconds; 5-10 kHz sweep repetition rate) achieved with the QC lasers allow for the measure of relatively rapid transient phenomena or a high degree of signal averaging in a short time. Noise-equivalent absorbances of 3 × 10-6 have also been obtained without optimizing the optical arrangement.",

author = "Sharpe, {Steven W.} and Kelly, {James F.} and Williams, {Richard M.} and Hartman, {John S.} and Claire Gmachl and Federico Capasso and Sivco, {Deborah L.} and Baillargeon, {James N.} and Cho, {Alfred Y.}",

year = "1999",

language = "English (US)",

volume = "3758",

pages = "23--33",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Proceedings of the 1999 Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Processing Monitoring II ; Conference date: 19-07-1999 Through 20-07-1999",

}

TY - JOUR

T1 - Rapid scan (Doppler-limited) absorption spectroscopy using mid-infrared quantum cascade lasers

AU - Sharpe, Steven W.

AU - Kelly, James F.

AU - Williams, Richard M.

AU - Hartman, John S.

AU - Gmachl, Claire

AU - Capasso, Federico

AU - Sivco, Deborah L.

AU - Baillargeon, James N.

AU - Cho, Alfred Y.

PY - 1999

Y1 - 1999

N2 - Laser characteristics have been evaluated for mid-infrared quantum-cascade (QC) lasers operating in a continuous mode at cryogenic temperatures. These tests were performed to determine the suitability of QC lasers for use in various spectroscopic applications, including Doppler-limited molecular absorption spectroscopy and pressure-limited LIDAR instrumentation. Using rapid-scanning techniques, direct absorbance measurements of nitric oxide (NO), ammonia (NH3) and nitrous oxide (N2O) have been performed with QC lasers, operating at either 5.2 or 8.5 μm. Measured Doppler-limited absorption profiles show no distortion with increased averaging (up to 103-104 samples averaged), thereby minimizing the need for sophisticated data acquisition systems which re-register successive data streams to accommodate for laser frequency jitter and drift. Additionally, the high tuning rates (2.5 cm-1 in 0.6 milliseconds; 5-10 kHz sweep repetition rate) achieved with the QC lasers allow for the measure of relatively rapid transient phenomena or a high degree of signal averaging in a short time. Noise-equivalent absorbances of 3 × 10-6 have also been obtained without optimizing the optical arrangement.

AB - Laser characteristics have been evaluated for mid-infrared quantum-cascade (QC) lasers operating in a continuous mode at cryogenic temperatures. These tests were performed to determine the suitability of QC lasers for use in various spectroscopic applications, including Doppler-limited molecular absorption spectroscopy and pressure-limited LIDAR instrumentation. Using rapid-scanning techniques, direct absorbance measurements of nitric oxide (NO), ammonia (NH3) and nitrous oxide (N2O) have been performed with QC lasers, operating at either 5.2 or 8.5 μm. Measured Doppler-limited absorption profiles show no distortion with increased averaging (up to 103-104 samples averaged), thereby minimizing the need for sophisticated data acquisition systems which re-register successive data streams to accommodate for laser frequency jitter and drift. Additionally, the high tuning rates (2.5 cm-1 in 0.6 milliseconds; 5-10 kHz sweep repetition rate) achieved with the QC lasers allow for the measure of relatively rapid transient phenomena or a high degree of signal averaging in a short time. Noise-equivalent absorbances of 3 × 10-6 have also been obtained without optimizing the optical arrangement.

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M3 - Conference article

AN - SCOPUS:0033332141

SN - 0277-786X

VL - 3758

SP - 23

EP - 33

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Proceedings of the 1999 Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Processing Monitoring II

Y2 - 19 July 1999 through 20 July 1999

ER -

Rapid scan (Doppler-limited) absorption spectroscopy using mid-infrared quantum cascade lasers

Abstract

All Science Journal Classification (ASJC) codes

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