Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers

Gabriel Somesfalean; Mikael Sjöholm; Linda Persson; H Gao; Tomas Svensson; Sune Svanberg

doi:10.1063/1.1921351

Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers

Gabriel Somesfalean, Mikael Sjöholm, Linda Persson, H Gao, Tomas Svensson, Sune Svanberg

Atomic Physics

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Abstract

The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.

Original language	English
Journal	Applied Physics Letters
Volume	86
Issue number	18
DOIs	https://doi.org/10.1063/1.1921351
Publication status	Published - 2005

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

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10.1063/1.1921351

Somesfalean2005

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title = "Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers",

abstract = "The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.",

author = "Gabriel Somesfalean and Mikael Sj{\"o}holm and Linda Persson and H Gao and Tomas Svensson and Sune Svanberg",

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journal = "Applied Physics Letters",

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AU - Somesfalean, Gabriel

AU - Sjöholm, Mikael

AU - Persson, Linda

AU - Gao, H

AU - Svensson, Tomas

AU - Svanberg, Sune

PY - 2005

Y1 - 2005

N2 - The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.

AB - The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.

U2 - 10.1063/1.1921351

DO - 10.1063/1.1921351

M3 - Article

SN - 0003-6951

VL - 86

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

ER -

Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers

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