マルチモードレーザダイオードを用いたテラヘルツ検査技術の開発

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2013/08/01

タイトル(英語): Development of the Terahertz Inspection Technology using Multimode Laser Diode

著者名: 高仲　徹（（株）東芝 電力システム社 電力・社会システム技術開発センター 制御システム部 マイクロエレクトロニクス・ネットワーク技術），西川　浩行（（株）東芝 電力システム社 電力・社会システム技術開発センター 制御システム部 マイクロエレクトロニクス・ネットワーク技術），鮫田　芳富（（株）東芝 電力システム社 電力・社会システム技術開発センター 制御システム部 マイクロエレクトロニクス・ネットワーク技術），山本　敬治（（株）東芝 電力システム社 電力・社会システム技術開発センター 制御システム部 マイク

著者名(英語): Tohru Takanaka (Microelectronics and Network Technology Group, Control Systems R&D Department, Power and Industrial Systems R&D Center, Power Systems Company, TOSHIBA CORPORATION), Hiroyuki Nishikawa (Microelectronics and Network Technology Group, Control Systems R&D Department, Power and Industrial Systems R&D Center, Power Systems Company, TOSHIBA CORPORATION), Yoshito Sameda (Microelectronics and Network Technology Group, Control Systems R&D Department, Power and Industrial Systems R&D Center, Power Systems Company, TOSHIBA CORPORATION), Keiji Yamamoto (Microelectronics and Network Technology Group, Control Systems R&D Department, Power and Industrial Systems R&D Center, Power Systems Company, TOSHIBA CORPORATION)

キーワード: テラヘルツ波，テラヘルツ時間領域分光法（THz-TDS），レーザダイオード，コンクリート，ケーブル　　terahertz wave，terahertz-time domain spectroscopy，laser diode，concrete，cable

要約(英語): The femtosecond laser (fs laser) is generally used in order to transmit and receive the terahertz (THz) wave. But the fs laser is very expensive. The cost of equipment is an important factor to adopt inspection equipment. Therefore, we developed the terahertz time domain spectroscopy (THz-TDS) using laser diode (LD) which cheap laser. The measured samples are concretes and cables. Concretes and cables are generally inspected by X-rays or ultrasonic waves, and those inspections are required to inspect the measuring object by non-destructive and non-contact. We measured about the sample from which the diameter of glass spheres differed, and the sample which mixed glass spheres with cement. We disassembled the cable and measured the material separately. In THz-TDS using fs laser and LD, we confirmed correlation between transmission and the diameter of glass spheres, and correlation between transmission and the mixture ratio of cement and glass spheres. Moreover, we confirmed that we recognized the form of the conductor in the cable by transmission of the THz wave through the material of the cable. We compared the measurement result of having used fs laser with the measurement result of having used LD, and we validated that the equipment using LD is suitable for the inspection equipment.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.133 No.8 （2013）

本誌掲載ページ: 430-435 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/133/8/133_430/_article/-char/ja/