FTIR spectroscopy based on a multipass gas cell and TE cooled HgCdTe sensors for environmental monitoring and defense applications
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.
Bauman Moscow State Technical Univ. (Russian Federation)
Fufurin Igor Leonidovich, born 1984, PhD. Currently working as an associate professor of the Physics department of Bauman Moscow State Technical University and the head of the research department of JSC «Center for Applied Physics BMSTU». Gives lectures on «Physics» and «Fundamentals of Fourier Spectroscopy». In 2007 get master’s degree. In 2010 defended PhD thesis. Research interests: infrared spectroscopy, atmospheric optics, incorrect inverse problems, remote sensing, design of optical devices, biomedical spectroscopy Has more than 100 publications, 3 patents. Head of the research work «Creation and experimental research of critical elements and models of analytical units of technical means of off-laboratory remote detection and identification of hazardous substances». Executor of several grants of the Russian Foundation for Basic Research and several R&D works. Scientific Secretary of the All-Russian Conference «Irreversible Processes in Nature and Technology».
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