Tunable enhanced optical absorption of graphene using plasmonic perfect absorbers
Enhancement and manipulation of light absorption in graphene is a significant issue for applications of graphene-based optoelectronic devices. In order to achieve this purpose in the visible region, we demonstrate a design of a graphene optical absorber inspired by metal-dielectric-metal metamaterial for perfect absorption of electromagnetic waves. The optical absorbance ratios of single and three atomic layer graphene are enhanced up to 37.5% and 64.8%, respectively. The graphene absorber shows polarization-dependence and tolerates a wide range of incident angles. Furthermore, the peak position and bandwidth of graphene absorption spectra are tunable in a wide wavelength range through a specific structural configuration. These results imply that graphene in combination with plasmonic perfect absorbers have a promising potential for developing advanced nanophotonic devices.
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Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 10 Technology
- 09 Engineering
- 02 Physical Sciences
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 10 Technology
- 09 Engineering
- 02 Physical Sciences