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Polarization-Selective Bidirectional Absorption Based on a Bilayer Plasmonic Metasurface
- Source :
- Materials, Materials, Vol 13, Iss 5298, p 5298 (2020), Volume 13, Issue 22
- Publication Year :
- 2020
-
Abstract
- We propose an alignment-free and polarization-selective bidirectional absorber composed of a one-dimensional bilayer Au grating array buried in a silicon nitride spacer. The absorptivity of the designed structure is more than 95% (77%) under normal forward (backward) TM-polarized light incidence, and is more than 80% (70%) within a forward (backward) incident angle up to 30&deg<br />The great bidirectional absorption performance is illustrated by the resonance coupling of the surface plasmon polaritons (SPPs) resonance, the propagating surface plasmon (PSP) resonance and the localized surface plasmon (LSP) resonance under TM-polarized wave illumination. Moreover, the excitation of the Fano-like resonance mode of the proposed metasurface can produce two significantly different peaks in the absorption spectrum under the oblique TM-polarized incidence, which is beneficial for the plasmon-sensing application. Therefore, the proposed bidirectional metasurface absorber can be a candidate in the application of optical camouflage, thermal radiation, solar cells and optical sensing.
- Subjects :
- Materials science
Absorption spectroscopy
Physics::Optics
02 engineering and technology
Grating
lcsh:Technology
01 natural sciences
polarization-selective
Article
absorb
010309 optics
0103 physical sciences
General Materials Science
lcsh:Microscopy
Plasmon
lcsh:QC120-168.85
lcsh:QH201-278.5
lcsh:T
business.industry
Bilayer
Surface plasmon
surface plasmons
021001 nanoscience & nanotechnology
Polarization (waves)
Surface plasmon polariton
metasurface
lcsh:TA1-2040
Optoelectronics
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:Engineering (General). Civil engineering (General)
0210 nano-technology
business
lcsh:TK1-9971
Localized surface plasmon
Subjects
Details
- ISSN :
- 19961944
- Volume :
- 13
- Issue :
- 22
- Database :
- OpenAIRE
- Journal :
- Materials (Basel, Switzerland)
- Accession number :
- edsair.doi.dedup.....863318826c3037d64d642edb4fcdf041