Identification of Chemical Compounds by the Reflected Spectra in the Range of 5.3–12.8 μm Using a Tunable Quantum Cascade Laser

Golyak, Igor S.; Morozov, A. N.; Svetlichnyi, S. I.; Tabalina, Anastasiya S.; Fufurin, I. L.

doi:10.1134/s1990793119040055

Cited by 7 publications

(1 citation statement)

References 19 publications

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“…Molecular optical spectroscopy [1] (infrared (IR) absorption spectroscopy [2,3], photoluminescence [4,5], Raman spectroscopy [6,7], terahertz spectroscopy [8], and diffuse scattering spectroscopy [9,10]) is powerful and a generally accepted method for studying the structure and composition of chemical compounds. The method of IR Fourier (FTIR) spectroscopy is the most common method for studying substances in the gas phase both under laboratory and natural conditions [11].…”

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of the Sensitivity of an Infrared Fourier Spectrometer

Fufurin

Shlygin²,

Pozvonkov³

et al. 2021

Russ. J. Phys. Chem. B

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The analytical dependence of the signal-to-noise ratio (SNR) of the measured interferograms of an infrared (IR) Fourier spectrometer on the temperature contrast of the observation path and on the physicochemical properties of the test substance is obtained. The analytical dependences of the minimum detectable concentration of a substance on the value of the temperature contrast are obtained. It is shown experimentally that the theoretical estimates of the minimum detectable concentrations with an accuracy of the order of the mean square error correspond to the experimental values. The obtained analytical dependences make it possible for the given physicochemical properties of substances, the parameters of the IR Fourier spectrometer, and the values of the temperature contrast to estimate minimum detectable concentration of the substance.

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