テラヘルツ波を用いた断層イメージングにおける深さ分布の測定精度向上

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: 2014/06/01

タイトル(英語): Improvement of Measurement Resolution of Depth Distribution in Cross-sectional Imaging using Terahertz Wave

著者名: 福地　哲生（（一財）電力中央研究所 電力技術研究所），布施　則一（（一財）電力中央研究所 電力技術研究所），水野　麻弥（（独）情報通信研究機構 電磁波計測研究所），福永　香（（独）情報通信研究機構 電磁波計測研究所）

著者名(英語): Tetsuo Fukuchi (Central Research Institute of Electric Power Industry), Norikazu Fuse (Central Research Institute of Electric Power Industry), Maya Mizuno (National Institute of Information and Communications Technology), Kaori Fukunaga (National Institute of Information and Communications Technology)

キーワード: テラヘルツ波，反射イメージング，断層イメージング，深さ分布，周波数フィルタ　　terahertz wave，reflection imaging，cross-sectional imaging，depth distribution，frequency filtering

要約(英語): Time-resolved reflection measurement using broadband, short terahertz pulses can provide cross-sectional images of dielectric materials at different depths. Low frequency components which have responses over a wide time range may result in inclusion of spurious signals which arise from strong reflections at other depths. Model calculations showed that such spurious signals can be suppressed by application of a frequency filter of appropriate center frequency. The effect of frequency filtering was investigated in cross-sectional imaging of an IC card. Cross-sectional images were obtained at depth intervals of 0.18 mm, which provided images at 5 different depth intervals. As a result of frequency filtering, spurious images resulting from strong reflections at different depths could be reduced in intensity, which resulted in improvement of the measurement resolution of the depth distribution.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.6 （2014）

本誌掲載ページ: 375-382 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/134/6/134_375/_article/-char/ja/