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High-resolution absorption measurements by use of two-tone frequency-modulation spectroscopy with diode lasers

Avetisov, V. G and Kauranen, P (1997) In Applied Optics 36(18). p.4043-4054
Abstract
The capability of two-tone frequency-modulation spectroscopy (TTFMS) in deriving spectral line-shape information was investigated. Two oxygen A-band transitions at 760 nm were selected, and the Voigt profile and two different collisionally narrowed line profiles were employed in their analysis. By means of a least-squares fitting procedure, we obtained accurate information regarding transition strengths and pressure-induced broadening, shift, and narrowing coefficients. Both TTFMS and direct absorption Line shapes were modeled with deviations as small as 0.3% over a wide pressure range by use of the collisionally narrowed Line profiles. Line parameters measured with TTFMS showed excellent agreement with the parameters measured with direct... (More)
The capability of two-tone frequency-modulation spectroscopy (TTFMS) in deriving spectral line-shape information was investigated. Two oxygen A-band transitions at 760 nm were selected, and the Voigt profile and two different collisionally narrowed line profiles were employed in their analysis. By means of a least-squares fitting procedure, we obtained accurate information regarding transition strengths and pressure-induced broadening, shift, and narrowing coefficients. Both TTFMS and direct absorption Line shapes were modeled with deviations as small as 0.3% over a wide pressure range by use of the collisionally narrowed Line profiles. Line parameters measured with TTFMS showed excellent agreement with the parameters measured with direct absorption. The experimental technique used constant-current fast-wavelength scanning, which improved measurement accuracy. (C) 1997 Optical Society of America. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
36
issue
18
pages
4043 - 4054
publisher
OSA
external identifiers
  • scopus:0031165182
ISSN
2155-3165
DOI
10.1364/AO.36.004043
language
English
LU publication?
no
id
b5e9b5a8-1fed-4a48-ae87-e0cee36ab640 (old id 2257365)
date added to LUP
2012-02-24 00:01:05
date last changed
2017-08-06 04:43:36
@article{b5e9b5a8-1fed-4a48-ae87-e0cee36ab640,
  abstract     = {The capability of two-tone frequency-modulation spectroscopy (TTFMS) in deriving spectral line-shape information was investigated. Two oxygen A-band transitions at 760 nm were selected, and the Voigt profile and two different collisionally narrowed line profiles were employed in their analysis. By means of a least-squares fitting procedure, we obtained accurate information regarding transition strengths and pressure-induced broadening, shift, and narrowing coefficients. Both TTFMS and direct absorption Line shapes were modeled with deviations as small as 0.3% over a wide pressure range by use of the collisionally narrowed Line profiles. Line parameters measured with TTFMS showed excellent agreement with the parameters measured with direct absorption. The experimental technique used constant-current fast-wavelength scanning, which improved measurement accuracy. (C) 1997 Optical Society of America.},
  author       = {Avetisov, V. G and Kauranen, P},
  issn         = {2155-3165},
  language     = {eng},
  number       = {18},
  pages        = {4043--4054},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {High-resolution absorption measurements by use of two-tone frequency-modulation spectroscopy with diode lasers},
  url          = {http://dx.doi.org/10.1364/AO.36.004043},
  volume       = {36},
  year         = {1997},
}