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ID 114124
著者
Minamiji, Fui Tokushima University
Oe, Ryo JST|Tokushima University
Koresawa, hidenori JST|Tokushima University
山本, 裕紹 Tokushima University|JST|Utsunomiya University KAKEN研究者をさがす
資料タイプ
学術雑誌論文
抄録
We construct a full-field phase-shifting terahertz digital holography (PS-THz-DH) system by use of a THz quantum cascade laser and an uncooled, 2D micro-bolometer array. The PS-THz-DH enables us to separate the necessary diffraction-order image from unnecessary diffraction-order images without the need for spatial Fourier filtering, leading to suppress the decrease of spatial resolution. 3D shape of a visibly opaque object is visualized with a sub-millimeter lateral resolution and a sub-μm axial resolution. Also, the digital focusing of amplitude image enables the visualization of internal structure with the millimeter-order axial selectivity. Furthermore, the internal stress distribution of an externally compressed object is visualized from the phase image. The demonstrated results imply a possibility for non-destructive inspection of visibly opaque non-metal materials.
掲載誌名
Optics Express
ISSN
10944087
出版者
OSA publishing
27
23
開始ページ
33854
終了ページ
33868
発行日
2019-11-05
権利情報
© 2019 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
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出版社版DOI
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フルテキストファイル
言語
eng
著者版フラグ
出版社版
部局
ポストLEDフォトニクス研究所
理工学系