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Two-tone frequency-modulation spectroscopy for quantitative measurements of gaseous species: Theoretical, numerical, and experimental investigation of line shapes

Avetisov, V. G and Kauranen, P (1996) In Applied Optics 35(24). p.4705-4723
Abstract
The capability of retrieving spectral information from line shapes recorded by two-tone frequency-modulation spectroscopy (TTFMS) is investigated. A TTFMS theory accounting for dispersion and nonlinear distortion of diode laser frequency modulation response is presented. The adequacy of the theory for a detailed modeling of line shapes recorded with high resolution is examined. An extensive error analysis of line parameters (i.e., width, intensity, and line center) retrieved by a nonlinear least-squares fitting procedure is made. Plots of residual errors with characteristic signatures that are due to incorrectly assigned modulation parameters and choice of line profile are presented. In least-squares fits to experimental oxygen data with a... (More)
The capability of retrieving spectral information from line shapes recorded by two-tone frequency-modulation spectroscopy (TTFMS) is investigated. A TTFMS theory accounting for dispersion and nonlinear distortion of diode laser frequency modulation response is presented. The adequacy of the theory for a detailed modeling of line shapes recorded with high resolution is examined. An extensive error analysis of line parameters (i.e., width, intensity, and line center) retrieved by a nonlinear least-squares fitting procedure is made. Plots of residual errors with characteristic signatures that are due to incorrectly assigned modulation parameters and choice of line profile are presented. In least-squares fits to experimental oxygen data with a Voigt profile influence from collisional (Dicke) narrowing is clearly exhibited, and when we used a collisionally narrowed line profile deviations of the model were reduced to less than 0.2%. We demonstrate that accurate quantitative measurements by TTFMS over a wide range of concentrations, temperatures, and pressures are possible. (C) 1996 Optical Society of America (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
35
issue
24
pages
4705 - 4723
publisher
OSA
external identifiers
  • scopus:0030214685
ISSN
2155-3165
DOI
10.1364/AO.35.004705
language
English
LU publication?
no
id
5d27e8c4-fa21-4a22-8fb2-51b19d73711d (old id 2257369)
date added to LUP
2012-02-24 00:02:00
date last changed
2017-01-01 07:38:11
@article{5d27e8c4-fa21-4a22-8fb2-51b19d73711d,
  abstract     = {The capability of retrieving spectral information from line shapes recorded by two-tone frequency-modulation spectroscopy (TTFMS) is investigated. A TTFMS theory accounting for dispersion and nonlinear distortion of diode laser frequency modulation response is presented. The adequacy of the theory for a detailed modeling of line shapes recorded with high resolution is examined. An extensive error analysis of line parameters (i.e., width, intensity, and line center) retrieved by a nonlinear least-squares fitting procedure is made. Plots of residual errors with characteristic signatures that are due to incorrectly assigned modulation parameters and choice of line profile are presented. In least-squares fits to experimental oxygen data with a Voigt profile influence from collisional (Dicke) narrowing is clearly exhibited, and when we used a collisionally narrowed line profile deviations of the model were reduced to less than 0.2%. We demonstrate that accurate quantitative measurements by TTFMS over a wide range of concentrations, temperatures, and pressures are possible. (C) 1996 Optical Society of America},
  author       = {Avetisov, V. G and Kauranen, P},
  issn         = {2155-3165},
  language     = {eng},
  number       = {24},
  pages        = {4705--4723},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {Two-tone frequency-modulation spectroscopy for quantitative measurements of gaseous species: Theoretical, numerical, and experimental investigation of line shapes},
  url          = {http://dx.doi.org/10.1364/AO.35.004705},
  volume       = {35},
  year         = {1996},
}