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Title: Reduced-background gas-phase absorption spectroscopy

Abstract

We propose and demonstrate a new method for single-shot multiplex absorption spectroscopy that permits enhanced sensitivity in the simultaneous measurement of multiple spectral lines in rapidly changing gas-phase media, such as turbulent flames. It uses an ultrashort laser pulse that propagates through the absorbing medium, for which the relevant absorption information resides in the free-induction decay that is trailing behind the transmitted pulse. Time gating out most of the transmitted pulse, but not the free-induction decay, enhances the relative fraction of light that contains absorption information when the spectrum is measured. This procedure reduces the background associated with the input light, thus enhancing detection sensitivity. {copyright} {ital 1998} {ital Optical Society of America}

Authors:
;  [1]
  1. Combustion Research Facility, MS 9051, Sandia National Laboratories, Livermore, California 94551-0969 (United States)
Publication Date:
OSTI Identifier:
641520
Resource Type:
Journal Article
Journal Name:
Optics Letters
Additional Journal Information:
Journal Volume: 23; Journal Issue: 16; Other Information: PBD: Aug 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; 20 FOSSIL-FUELED POWER PLANTS; GAS ANALYSIS; ABSORPTION SPECTROSCOPY; LASER RADIATION; PULSES; SENSITIVITY

Citation Formats

Sweetser, J N, and Trebino, R. Reduced-background gas-phase absorption spectroscopy. United States: N. p., 1998. Web. doi:10.1364/OL.23.001289.
Sweetser, J N, & Trebino, R. Reduced-background gas-phase absorption spectroscopy. United States. https://doi.org/10.1364/OL.23.001289
Sweetser, J N, and Trebino, R. 1998. "Reduced-background gas-phase absorption spectroscopy". United States. https://doi.org/10.1364/OL.23.001289.
@article{osti_641520,
title = {Reduced-background gas-phase absorption spectroscopy},
author = {Sweetser, J N and Trebino, R},
abstractNote = {We propose and demonstrate a new method for single-shot multiplex absorption spectroscopy that permits enhanced sensitivity in the simultaneous measurement of multiple spectral lines in rapidly changing gas-phase media, such as turbulent flames. It uses an ultrashort laser pulse that propagates through the absorbing medium, for which the relevant absorption information resides in the free-induction decay that is trailing behind the transmitted pulse. Time gating out most of the transmitted pulse, but not the free-induction decay, enhances the relative fraction of light that contains absorption information when the spectrum is measured. This procedure reduces the background associated with the input light, thus enhancing detection sensitivity. {copyright} {ital 1998} {ital Optical Society of America}},
doi = {10.1364/OL.23.001289},
url = {https://www.osti.gov/biblio/641520}, journal = {Optics Letters},
number = 16,
volume = 23,
place = {United States},
year = {Sat Aug 01 00:00:00 EDT 1998},
month = {Sat Aug 01 00:00:00 EDT 1998}
}