Fingerprint detection in the mid-infrared region based on guided-mode resonance and phonon-polariton coupling of analyte
- 26 October 2021
- journal article
- research article
- Published by Optica Publishing Group in Optics Express
- Vol. 29 (23), 37234-37244
- https://doi.org/10.1364/oe.438354
Abstract
Mid-infrared absorption spectroscopy is an effective method for detecting analyte fingerprints without labeling, but the inherent loss of metals in current methods is a main issue. Here, a sensing scheme was proposed that uses an all-dielectric grating metasurface and angular scanning of polarized light, and then it was verified by numerical simulation. The proposed fingerprint detection scheme could effectively couple a guided-mode resonance spectrum peak with the characteristic peak of the analyte's phonon-polariton in the mid-infrared region, significantly enhancing the interaction between light and the analyte. The novel scheme would realize broadband enhancement to detect a variety of substances, and facilitate mid-infrared sensing and analysis of trace substances. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing AgreementFunding Information
- Natural Science Foundation of Fujian Province (2020J01712)
- Xiamen Marine and Fishery Development Special Fund (20CZB014HJ03)
- Innovation Fund for Young Scientists of Xiamen under Grant (3502Z20206021)
- Youth Talent Support Program of Jimei University (ZR2019002)
- the Second Youth Talent Support Program of Fujian Province
- Science Fund for Distinguished Young Scholars of Fujian Province (2020J06025)
- the Fujian Provincial Department of Science and Technology (2019H0022)
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