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Graphene Plasmonic Metasurfaces to Steer Infrared Light
Zubin Li1, Kan Yao2, Fengnian Xia3
11] Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, United States [2] Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, TEDA Applied Physics Institute &School of Physics, Nankai University, Tianjin 300457, China.
Engineered graphene metasurfaces dynamically control infrared light phase and amplitude with high efficiency. This breakthrough enables advanced applications in adaptive optics and beam shaping for infrared wavelengths.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Metallic metasurfaces offer light manipulation but are limited to visible/near-infrared and lack tunability.
- Graphene's tunable plasmonic resonance presents an alternative for advanced optical control.
Purpose of the Study:
- To propose and demonstrate novel graphene metasurfaces for dynamic control of infrared light.
- To achieve high efficiency and broad tunability in phase and amplitude modulation.
Main Methods:
- Combining patterned graphene structures with subwavelength-thick optical cavities.
- Utilizing the plasmonic resonance of graphene ribbons to control infrared light properties.
Main Results:
- Graphene metasurfaces demonstrate dynamic control over infrared light phase (nearly 2π range) and amplitude.
- Achieved anomalous reflection, reflective focusing lenses, and non-diffracting Airy beams.
- High reflection amplitude maintained without significant variations.
Conclusions:
- Graphene metasurfaces offer a new platform for efficient and tunable infrared light manipulation.
- Enables highly integrated photonic platforms for dynamic beam shaping and adaptive optics in the infrared spectrum.
