FTIR spectroscopy based on a multipass gas cell and TE cooled HgCdTe sensors for environmental monitoring and defense applications

Igor L. Fufurin; Iliya S. Golyak; Sergey V. Bashkin; Stanislav V. Knyazev; Larisa N. Timashova; Andrey N. Morozov

doi:10.1117/12.2588714

18 April 2021 FTIR spectroscopy based on a multipass gas cell and TE cooled HgCdTe sensors for environmental monitoring and defense applications

Igor L. Fufurin, Iliya S. Golyak, Sergey V. Bashkin, Stanislav V. Knyazev, Larisa N. Timashova, Andrey N. Morozov

Author Affiliations +

Proceedings Volume 11775, Integrated Optics: Design, Devices, Systems and Applications VI; 1177512 (2021) https://doi.org/10.1117/12.2588714
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Conference Poster

Abstract

In this paper, we consider an integrated optical system designed to analyze the composition of ambient air. The optical system consists of a dynamic Michelson interferometer and a multi-pass White gas cell. We use steady state IR radiation source, that is integrated in the system. IR Radiation is modulated by passing through the interferometer, and then enters a multi-pass gas cell. We use two MCT TE cooled photodetector as reference and signal detectors. To digitize registered signal, we use a 24-bit ADC. For the described system, the sensitivity limit is about ppb levels, that allows detecting volatile substances at the maximum permissible concentrations. Described FTIR spectroscopy systems can be used for ambient air analysis and for breathomics applications.

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Igor L. Fufurin, Iliya S. Golyak, Sergey V. Bashkin, Stanislav V. Knyazev, Larisa N. Timashova, and Andrey N. Morozov "FTIR spectroscopy based on a multipass gas cell and TE cooled HgCdTe sensors for environmental monitoring and defense applications", Proc. SPIE 11775, Integrated Optics: Design, Devices, Systems and Applications VI, 1177512 (18 April 2021); https://doi.org/10.1117/12.2588714

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