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) |
|---|---|
| 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 |
Funding
This work was supported in part by the Jiangsu Government Scholarship for Oversea Studies under Grant JS-2014-318, in part by the Qing Lan Project, in part by the Natural Science Foundation of Jiangsu Province under Grant BK20141169, and in part by the Materials Research Science and Engineering Center under Grant DMR-1121262 through the Northwestern University. Use of the Center for Nanoscale Materials at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-AC02-06CH11357.
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