Manipulation of surface plasmon resonance of a graphene-based Au aperture antenna in visible and near-infrared regions
Autor: | Luogen Deng, Yuan Wan, Yashuai An, Zhi Tao |
---|---|
Rok vydání: | 2018 |
Předmět: |
Materials science
Physics::Optics 02 engineering and technology 01 natural sciences law.invention Optics law 0103 physical sciences Electrical and Electronic Engineering Physical and Theoretical Chemistry Surface plasmon resonance 010306 general physics Graphene business.industry Antenna aperture Astrophysics::Instrumentation and Methods for Astrophysics 021001 nanoscience & nanotechnology Polarization (waves) Ray Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Blueshift Wavelength Physics::Accelerator Physics 0210 nano-technology business Refractive index |
Zdroj: | Optics Communications. 410:733-739 |
ISSN: | 0030-4018 |
Popis: | Behaviors of surface plasmon resonance (SPR) of a graphene-based Au aperture antenna are investigated in visible and near-infrared (vis-NIR) regions. Compared with the SPR wavelength of a traditional Au aperture antenna, the SPR wavelength of the graphene-based Au aperture antenna shows a remarkable blue shift due to the redistribution of the electric field in the proposed structure. The electric field of the graphene-based Au aperture antenna is highly localized on the surface of the graphene in the aperture and redistributed to be a standing wave. Moreover, the SPR of a graphene-based Au aperture antenna is sensitive to the thickness and the refractive index of the dielectric layer, the graphene Fermi energy, the refractive index of the environment and the polarization direction of the incident light. Finally, we find the wavelength, intensity and phase of the reflected light of the graphene-based Au aperture antenna array can be actively modulated by varying the graphene Fermi energy. The proposed structure provides a promising platform for realizing a tunable optical filter, a highly sensitive refractive index sensor, and other actively tunable optical and optoelectronic devices. |
Databáze: | OpenAIRE |
Externí odkaz: |