Liang, L., Zheng, Q., Wen, L., Cumming, D. R.S. and Chen, Q. (2021) Miniaturized spectroscopy with tunable and sensitive plasmonic structures. Optics Letters, 46(17), pp. 4264-4267. (doi: 10.1364/OL.426624)
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Abstract
Broad linewidth and a lack of spectral analysis limit the applications of plasmonic sensors. In this paper, a plasmonic sensor with a high sensing FoM above 900 RIU-1 in the terahertz range is proposed based on high-quality factor (>1000) surface lattice resonance in subwavelength near-flat metallic gratings. Moreover, such a highly selective spectral manipulating scheme plus the greatly localized plasmonic resonance enables miniaturized spectroscopy based on a single detector by integrating an electro-optical material with the gratings. A spectral resolution of 0.1 GHz at a center frequency of 1.1 THz is predicted showing a four times improvement of measuring efficiency. This technique show promising potentials in on-site matter inspection and point-of-care testing.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Cumming, Professor David |
Authors: | Liang, L., Zheng, Q., Wen, L., Cumming, D. R.S., and Chen, Q. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Optics Letters |
Publisher: | Optical Society of America |
ISSN: | 0146-9592 |
ISSN (Online): | 1539-4794 |
Published Online: | 02 July 2021 |
Copyright Holders: | Copyright © 2021 Optical Society of America |
First Published: | First published in Optics Letters 46(17): 4264-4267 |
Publisher Policy: | Reproduced under a Creative Commons License |
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