Back to Search
Start Over
Miniaturized spectroscopy with tunable and sensitive plasmonic structures
- Source :
- Optics Letters; September 2021, Vol. 46 Issue: 17 p4264-4267, 4p
- Publication Year :
- 2021
-
Abstract
- A broad linewidth and a lack of spectral analysis limit the applications of plasmonic sensors. In this Letter, a plasmonic sensor with a large sensitivity in the terahertz (THz) 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 shows promising potential in on-site matter inspection and point-of-care testing.
Details
- Language :
- English
- ISSN :
- 01469592 and 15394794
- Volume :
- 46
- Issue :
- 17
- Database :
- Supplemental Index
- Journal :
- Optics Letters
- Publication Type :
- Periodical
- Accession number :
- ejs57501160