Modelling of Modulation Laser Spectroscopy Method for Study of Gas Mixtures Based on Methane

Authors S.M. Kukhtin

Kharkiv National University of Radioelectronics, 14, Nauki Ave., 61166 Kharkiv, Ukraine

Issue Volume 10, Year 2018, Number 6
Dates Received 16 July 2018; revised manuscript received 05 December 2018; published online 18 December 2018
Citation S.M. Kukhtin, J. Nano- Electron. Phys. 10 No 6, 06045 (2018)
PACS Number(s) 42.25.Bs, 42.62.Fi
Keywords Modulation laser spectroscopy, Direct Fourier transform, Absorption medium, Methane, Coefficient of loses, Experimental setup.

Mathematical modeling of modulation laser spectroscopy method (MLS) utilizing direct Fourier transform for estimation of loses in methane based gas mixtures was done in this work. Usability evaluation is provided for approximate analytical equations that are used for losses calculation in gas media with high absorption lorenzian line shape profile. The effect of laser’s amplitude-frequency characteristic on calculation accuracy was analyzed for different approaches of setting on frequency on maximum absorption in gas. Numbers of methods have been proposed for the measurement of loses in methane as well as evaluation of their accuracy. This work also accesses experimental setup and provides analysis of measurement results.

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