Tunable terahertz absorption in graphene-based metamaterial

Abstract One of the most important advantages of graphene is the capability of dynamically tuning its conductivity by means of chemical doping or gate voltage. Based on this property, we proposed a tunable graphene-based terahertz absorber composed of a periodically patterned graphene structure and a metal ground plane spaced by a thin SiO 2 dielectric layer. Our calculated results show that a perfect absorption can be achieved by using a single layer of graphene-based metamaterial structure at a fixed Fermi energy level. Moreover, the calculated electric field and power loss distributions enable us to reveal the absorption mechanism of the designed absorber. More importantly, we found that the absorption peak can be dynamically controlled over a broadband frequency range by adjusting the gate voltage without re-optimizing or re-fabricating the physical structure. This work may provide a further step in the development of compact tunable devices, such as tunable sensors and absorbers, switches, and slow light devices.

[1]  J. S. Gomez-Diaz,et al.  Graphene-based plasmonic switches at near infrared frequencies. , 2013, Optics express.

[2]  J. Perruisseau-Carrier,et al.  Design of tunable biperiodic graphene metasurfaces , 2012, 1210.5611.

[3]  T. Cui,et al.  Polarization-independent wide-angle triple-band metamaterial absorber. , 2011, Optics express.

[4]  Willie J Padilla,et al.  Highly-flexible wide angle of incidence terahertz metamaterial absorber , 2008, 0808.2416.

[5]  Nader Engheta,et al.  Transformation Optics Using Graphene , 2011, Science.

[6]  G. Hanson.  Dyadic Green's functions and guided surface waves for a surface conductivity model of graphene , 2007, cond-mat/0701205.

[7]  Goran Isić,et al.  Tunable metamaterials based on split ring resonators and doped graphene , 2013 .

[8]  Weiren Zhu,et al.  Tunable terahertz left-handed metamaterial based on multi-layer graphene-dielectric composite , 2014 .

[9]  P. Mounaix,et al.  Ultra-flexible multiband terahertz metamaterial absorber for conformal geometry applications. , 2013, Optics letters.

[10]  A. N. Grigorenko,et al.  Graphene plasmonics , 2012, Nature Photonics.

[11]  Yanhong Zou,et al.  Interaction between graphene and metamaterials: split rings vs. wire pairs. , 2012, Optics express.

[12]  Andre K. Geim,et al.  Electric Field Effect in Atomically Thin Carbon Films , 2004, Science.

[13]  K. Novoselov,et al.  A roadmap for graphene , 2012, Nature.

[14]  Xiang Zhai,et al.  Theoretical Investigation of Broadband and Wide-Angle Terahertz Metamaterial Absorber , 2014, IEEE Photonics Technology Letters.

[15]  H. Bağcı,et al.  A dynamically reconfigurable Fano metamaterial through graphene tuning for switching and sensing applications , 2013, Scientific Reports.

[16]  Yixian Qian,et al.  Design of a tunable terahertz narrowband metamaterial absorber based on an electrostatically actuated MEMS cantilever and split ring resonator array , 2013 .

[17]  Xiang Zhang,et al.  Switching terahertz waves with gate-controlled active graphene metamaterials. , 2012, Nature materials.

[18]  Sukosin Thongrattanasiri,et al.  Complete optical absorption in periodically patterned graphene. , 2012, Physical review letters.

[19]  Willie J Padilla,et al.  A metamaterial absorber for the terahertz regime: design, fabrication and characterization. , 2008, Optics express.

[20]  Huili Grace Xing,et al.  A new class of electrically tunable metamaterial terahertz modulators. , 2012, Optics express.

[21]  V. Gusynin,et al.  Magneto-optical conductivity in graphene , 2007, 0705.3783.

[22]  T. Kenny,et al.  CORRIGENDUM: Quantum Limit of Quality Factor in Silicon Micro and Nano Mechanical Resonators , 2014, Scientific Reports.

[23]  X C Zhang,et al.  Terahertz wave imaging: horizons and hurdles. , 2002, Physics in medicine and biology.

[24]  F. Xia,et al.  Tunable infrared plasmonic devices using graphene/insulator stacks. , 2012, Nature nanotechnology.

[25]  H. Bechtel,et al.  Graphene plasmonics for tunable terahertz metamaterials. , 2011, Nature nanotechnology.

[26]  Boyang Xie,et al.  Dynamically tunable plasmonically induced transparency in periodically patterned graphene nanostrips , 2013 .

[27]  Gamani Karunasiri,et al.  Bi-material terahertz sensors using metamaterial structures. , 2013, Optics express.

[28]  Sailing He,et al.  Terahertz Metamaterial Modulators Based on Absorption , 2011 .

[29]  Francesco De Angelis,et al.  Graphene in a photonic metamaterial. , 2010, Optics express.

[30]  Huaiwu Zhang,et al.  Dual band terahertz metamaterial absorber: Design, fabrication, and characterization , 2009 .

[31]  Ben-Xin Wang,et al.  Metamaterial-Based Low-Conductivity Alloy Perfect Absorber , 2014, Journal of Lightwave Technology.

[32]  Yan Zhang,et al.  Thermally tunable THz filter made of semiconductors , 2010 .

[33]  Zhenhua Ni,et al.  Broadband graphene polarizer , 2011 .

[34]  Willie J Padilla,et al.  Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging , 2008, 0807.3390.

[35]  Willie J. Padilla,et al.  A dual band terahertz metamaterial absorber , 2010 .