Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 29, Issue 3, Pages 295-298Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2016.2647262
Keywords
Circularly polarized light; circular dichroism; metasurface; plasmonic absorber; visible frequency
Funding
- Jiangsu Government Scholarship for Oversea Studies [JS-2014-318]
- Qing Lan Project
- Natural Science Foundation of Jiangsu Province [BK20141169]
- Materials Research Science and Engineering Center through the Northwestern University [DMR-1121262]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
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We demonstrate theoretically and experimentally a chiral-selective plasmonic absorber by utilizing n-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 similar to 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.
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