Phase Methods in Absorption Spectroscopy
DOI:
https://doi.org/10.15407/ujpe66.8.664Keywords:
interferometer, anomalous dispersion, ring gas laser, gas analyzer, absorption spectroscopyAbstract
The analysis of the air gas composition is a challenging task because the well-being and health of the people depend on its quality. Most methods to analyze the gaseous medium are not perfect, and the necessary sensitivity, selectivity, and accuracy are often lack. The article analyzes a possibility to optimize the selectivity and accuracy of interferometric (refractometric) gas analysis devices. The main idea of the work is to demonstrate the possibility of a transition from the direct measurement of the ratio between the light flux intensities to the measurement of frequency shifts and radiation frequency, which significantly increases the accuracy and sensitivity of the measurements. In order to enhance the selectivity of the analysis, measurements are proposed to be done in the area of the anomalous dispersion of the analyzed gas component. The presence of the phase component of the useful signal, which is several orders of magnitude larger than the amplitude component in the region of the anomalous dispersion of the analyte and linearly depends on the concentration, allows the measurements to be made in a wide interval of analyte concentrations. All that opens new opportunities for interferometric methods of gas analysis.
References
R.H. Wiens, H.H. Zwick. Infrared, Correlation, and Fourier Transform Spectroscopy. Edited by J.S. Mattson, H.B. Mark, jr., H.C. MacDonald, jr. (Marcel Dekker, 1977).
T.V. Ward, H.H. Zwick. Gas cell correlation spectrometer: GASPEC. Appl. Opt. 14, 2896 (1975).
https://doi.org/10.1364/AO.14.002896
V.R. Kozubovskii. Devices and Methods of Optical Absorption Control over Atmospheric Air Pollution Based on Selective Filtration. Dr.Sci. thesis (MIKhM, Moscow, 1991) (in Russian).
W. Demtr¨oder. Laser Spectroscopy (Springer, 2002).
W.C. Marlow. Hakenmethode. Appl. Opt. 6, 1715 (1967).
https://doi.org/10.1364/AO.6.001715
N.I. Bogdanskis, V.S. Bukreev, G.N. Zhizhin, M.N. Popov. Modern Trends in Spectroscopy Technique (Nauka, 1982) (in Russian).
T. Okamoto, S. Kawata. A photodiode array Fourier transform spectrometer based on a birefringent interferometer. Appl. Spectrosc. 40, 691 (1986).
https://doi.org/10.1366/0003702864508494
Ultrasensitive Laser Spectroscopy. Edited by D.S. Kliger (Academic, 1983)
V.R. Kozubovskii. Inventor's certificate 1805746 USSR, MKI G01N 21/61.
V.R. Kozubovskii, A.A. Bulyga. Method for increasing the sensitivity and selectivity of interferometric gas analyzers. Zh. Prikl. Spektrosk. 55, 300 (1991) (in Russian). https://doi.org/10.1007/BF00664866
V.R. Kozubovskii. Inventor's certificate 1608990 USSR, MKI G01N 21/45.
Yu.L. Klimontovich. Statistical Theory of Open Systems. Vol. 1: A Unified Approach to Kinetic Description of Processes in Active System (Springer, 1995).
V.R. Kozubovskii. Stabilization of the frequency of a ring gas laser by the beats of its counter-propagating waves. Zh. Prikl. Spektrosk. 49, 903 (1988) (in Russian). https://doi.org/10.1007/BF00661829
M.V. Danileiko, A.M. Fal, V.P. Fedin, M.T. Shpak, L.P. Yatsenko. Frequency reproducibility of ring He-Ne/CH4 lasers. Kvant. Electron. 9, 2013 (1982) (in Russian). https://doi.org/10.1070/QE1982v012n10ABEH006044
M.V. Danileiko, V.R. Kozubovskii, V.P. Fedin, M.T. Shpak. Study of Power Resonances of the Ring Laser. Preprint No. 9 (Institute of Physics of the Academy of Sciences of the Ukrainian SSR, Kyiv, 1977) (in Russian).
V.R. Kozubovskii. Gas analyzer based on a frequencystabilized ring laser. Zh. Prikl. Spektrosk. 58, 355 (1993) (in Russian). https://doi.org/10.1007/BF00662693
V.R. Kozubovskii. Inventor's certificate 1811287 USSR, MKI G01N 21/61, 21/39.
V.R. Kozubovskii. Patent of invention No. 100559 UA, MPK G01N 21/61, 2013, Bull. No. 1.
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