Abstract
We demonstrate theoretically and experimentally a chiral-selective plasmonic absorber by utilizing eng -shaped-resonators in the visible frequencies. Our metasurface design enables chiral-selective absorption bands, in which absorption peaks for left-handed circularly polarized and right-handed circularly polarized occur at different resonance wavelengths resulting in significant circular dichroism (CD). Both simulated and measured absorption spectra exhibit maximum absorptions exceeding 80% associated with a CD value of ∼0.5. Such a chiral plasmonic metasurface absorber with high performance could find applications in optical filters, non-linear optics, thermal emitters, and hot-electron collection devices.
Original language | English (US) |
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Article number | 7803536 |
Pages (from-to) | 295-298 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 29 |
Issue number | 3 |
DOIs | |
State | Published - Feb 1 2017 |
Keywords
- Circularly polarized light
- circular dichroism
- metasurface
- plasmonic absorber
- visible frequency
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering