Terahertz Amplifiers based on Multiple Graphene Layer with Field-Enhancement Effect

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概要

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• Terahertz (THz) devices have been developed over the last decade to utilize THz waves for non-destructive sensing and high-speed wireless communications. Ryzhii <i>et al.</i> theoretically demonstrated the feasibility of THz lasing in optically pumped multiple graphene layer (MGL) structures and proposed THz laser structures [V. Ryzhii <i>et al.</i>: J. Appl. Phys. <b>106</b> (2009) 084507]. In addition, metallic sheets perforated with a periodic array of holes (metal mesh) have been used for band-pass filters with resonant transmittance of unity. In these periodic structures, induced surface plasmon polaritons (SPPs) enhance the electric field near the holes. We investigated THz amplifiers composed of MGL and metal mesh structures using finite difference time domain (FDTD) electromagnetic simulation. A remarkable increase in the transmittance for the metal mesh structure with MGL was observed.

• 2011-07-25

著者

• Sano Eiichi

  Research Center For Integrated Quantum Electronics (rciqe) Hokkaido University

• Otsuji Taiichi

  Research Institute for Electrical Communication, Tohoku University, Sendai 980-8577, Japan

• Ryzhii Victor

  Computational Nano-Electronics Laboratory, University of Aizu, Aizuwakamatsu, Fukushima 965-8580, Japan

• Takatsuka Yuya

  Research Center for Integrated Quantum Electronics, Hokkaido University, Sapporo 060-8628, Japan

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