Analysis of Fiber-Enhanced Raman Gas Sensing Based on Raman Chemical Imaging

Analytical Chemistry
Di YanTorsten Frosch

Abstract

Fiber enhanced Raman spectroscopy (FERS) is an arising new technique for versatile highly sensitive and selective multigas analysis in various applications, such as environmental monitoring and medical breath diagnosis. In this study, the performance of FERS was thoroughly studied with the help of a specially designed multichannel Raman chemical imaging. Several types of hollow core photonic crystal fibers were thoroughly analyzed in terms of their performance in light confinement and sensitive gas sensing. The optimal fiber length for Raman gas sensing was found to be 15 cm in our spectroscopic system. To separate the Raman scattering of the target gas molecules from the background generated by the silica microstructure of the fiber, the optimal diameter of a spatial filter was analyzed and quantified as Ø3.9 μm, which balances the suppression of the silica background and the attenuation of the gas signal, originating from different regions in the plane of the fiber end-face. To achieve an easy-to-use gas monitoring system with stable performance, an automated coupling-method was developed, to simplify the alignment of the FERS setup. The optimized design of the FERS setup has remarkable potential for highly sensitive, miniatu...Continue Reading

References

Jan 18, 2003·Science·Philip Russell
Mar 5, 2009·Optics Express·Kamil StelmaszczykLudger Wöste
Nov 26, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Torsten FroschSergei G Kazarian
Jun 6, 2013·Optics Express·Altaf KhetaniHanan Anis
Jun 14, 2013·Analytical Chemistry·Torsten FroschJürgen Popp
Jan 13, 2015·Analytical and Bioanalytical Chemistry·Robert KeinerTorsten Frosch
Jul 16, 2015·Optics Letters·Alexander HartungTorsten Frosch

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Citations

Sep 8, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Timea FroschTorsten Frosch
Dec 6, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Timea FroschTorsten Frosch
Apr 23, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Domes ChristianTorsten Frosch
Dec 15, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sebastian WolfTorsten Frosch
Sep 19, 2019·Analytical and Bioanalytical Chemistry·Anne SieburgTorsten Frosch
Aug 28, 2020·Analytical Chemistry·Andreas KneblTorsten Frosch
Nov 6, 2018·Analytical Chemistry·Di YanTorsten Frosch
May 6, 2019·Analytical Chemistry·Andreas KneblTorsten Frosch
Dec 19, 2021·Analytical Chemistry·Dana Cialla-MayJürgen Popp

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