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Visible light nearly perfect absorber: an optimum unit cell arrangement for near absolute polarization insensitivity
- Source :
- Optics Express
- Publication Year :
- 2017
-
Abstract
- In this work, we propose an optimum unit cell arrangement to obtain near absolute polarization insensitivity in a metal-insulator-metal (MIM) based ultra-broadband perfect absorber. Our findings prove that upon utilizing this optimum arrangement, the response of the absorber is retained and unchanged over all arbitrary incidence light polarizations, regardless of the shape of the top metal patch. First, the impact of the geometry of the top nanopatch resonators on the absorption bandwidth of the overall structure is explored. Then, the response of the MIM design for different incidence polarizations and angles is scrutinized. Finally, the proposed design is fabricated and characterized. (C) 2017 Optical Society of America
- Subjects :
- Metal insulator metals
Polarization insensitivity
Materials science
Light
Metal patch
Physics::Optics
02 engineering and technology
01 natural sciences
010309 optics
Resonator
Optics
Polarization
0103 physical sciences
Surface plasmon resonance
Visible light
MIM devices
Perfect absorber
business.industry
Ultra-broadband
Near-field optics
021001 nanoscience & nanotechnology
Polarization (waves)
Atomic and Molecular Physics, and Optics
Unit cells
Metal insulator boundaries
Absorption bandwidth
0210 nano-technology
business
Refractive index
Electron-beam lithography
Visible spectrum
Subjects
Details
- ISSN :
- 10944087
- Volume :
- 25
- Issue :
- 22
- Database :
- OpenAIRE
- Journal :
- Optics express
- Accession number :
- edsair.doi.dedup.....29896600539e0e3aa1bd223cec216abf