Two-tone frequency-modulation spectroscopy for quantitative measurements of gaseous species: Theoretical, numerical, and experimental investigation of line shapes
(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:
https://lup.lub.lu.se/record/2257369
- author
- Avetisov, V. G and Kauranen, P
- publishing date
- 1996
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Optics
- volume
- 35
- issue
- 24
- pages
- 4705 - 4723
- publisher
- Optical Society of America
- 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
- 2016-04-04 08:41:12
- date last changed
- 2022-04-15 20:40:45
@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 = {{Optical Society of America}},
series = {{Applied Optics}},
title = {{Two-tone frequency-modulation spectroscopy for quantitative measurements of gaseous species: Theoretical, numerical, and experimental investigation of line shapes}},
url = {{https://lup.lub.lu.se/search/files/5191465/2297012.pdf}},
doi = {{10.1364/AO.35.004705}},
volume = {{35}},
year = {{1996}},
}