2013/11/11 by Hua Cheng, Shuqi Chen, Ping Yu +3 · 309 citations
Engineering · Materials Science · Physics and Astronomy · #Electron #Fermi energy #Fermi level #Graphene #Materials science #Metamaterials and Metasurfaces Applications #Nanotechnology #Optoelectronics #Photonic Crystals and Applications #Physics #Planar #Plasmon #Plasmonic and Surface Plasmon Research #Wavelength
paper · doi:10.1063/1.4831776
published in Applied Physics Letters 103(20), 203112 (American Institute of Physics)
openalex publication_date 2013/11/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/26
We present a dynamically wavelength tunable plasmonically induced transparency (PIT) planar device composed of periodically patterned graphene nanostrips for the mid-infrared region. The PIT effect can be achieved by a single layer of graphene nanostrips for a fixed Fermi energy. The PIT resonant wavelength can be dynamically tuned while maintaining PIT modulation strength, transmission peaks, and spectral line width by varying the Fermi energy of graphene without re-optimizing and re-fabricating the nanostructures. A three-level plasmonic system is demonstrated to well explain the formation mechanism of the wavelength tunable PIT in the graphene nanostrips. This work may offer a further step in the development of a compact tunable PIT device.