Raman gas analyzer with a confocal interferometer

This paper presents quite simple solution for raising intensity of radiation in a beam waist of a Raman gas analyzer. Laser linewidth used in an experiment ~21.2 MHz. The interferometer length is limited by a cuvette size. To compensate instabilities of interferometer length one of the mirrors is se...

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Bibliographic Details
Main Authors: Vasiliev, V. V., Vitkin, V. V., Polishchuk, A. V., Kurikova, V. V., Popov, E. E., Grigorenko, K. M.
Format: Conference Proceeding
Language:English
Subjects:
confocal interferometer
gas analyzing
Raman spectroscopy
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Summary:This paper presents quite simple solution for raising intensity of radiation in a beam waist of a Raman gas analyzer. Laser linewidth used in an experiment ~21.2 MHz. The interferometer length is limited by a cuvette size. To compensate instabilities of interferometer length one of the mirrors is set on a piezo transducer. Transmittance is used as a feedback loop signal to maximize the coupling.
ISSN:2642-5580
DOI:10.1109/ICLO48556.2020.9285391