Electron-Beam Excitation of Terahertz Magnetic Resonance in Split-Ring Resonators

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2015/11/01

タイトル(英語): Electron-Beam Excitation of Terahertz Magnetic Resonance in Split-Ring Resonators

著者名: Akiko Okajima (Department of Materials Science, Graduate School of Engineering, Mie University/Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University/The Center of Ultimate Technology on Nano-Electronics, Mie U

著者名(英語): Akiko Okajima (Department of Materials Science, Graduate School of Engineering, Mie University/Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University/The Center of Ultimate Technology on Nano-Electronics, Mie University), Tatsunosuke Matsui (Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University/The Center of Ultimate Technology on Nano-Electronics, Mie University)

キーワード: metamaterial，split-ring resonator，magnetic resonance，PIC-FDTD method，terahertz

要約(英語): We have numerically analyzed the interaction of electron-beam (e-beam) with split-ring resonator (SRR) meta-atoms based on the simplified particle-in-cell finite-difference time-domain (PIC-FDTD) method. We have shown that narrow-band magnetic resonance can be initiated with e-beam excitation, whose resonant frequency can be tuned by structure parameters of SRRs. We have also presented that strength of magnetic resonance varies with changing the acceleration energy of e-beam in a nonmonotonous way. We have shown that there are two important factors, the interaction time and the frequency content of the magnetic field around the e-beam, which should be taken into account for the e-beam excitation. This is very different situation from that in the photo-excitation with varying the excitation intensity. This unique property for the e-beam excitation may play a crucial role in developing the terahertz (THz) devices. Our findings may open the way for the development of e-beam driven THz optical devices.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.135 No.11 （2015） 特集：メタマテリアル・プラズモニクス

本誌掲載ページ: 414-417 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/135/11/135_414/_article/-char/ja/