Real-Time, Micrometer Depth-Resolved Imaging by Low-Coherence Reflectometry and a Two-Dimensional Heterodyne Detection Technique

  • Akiba Masahiro
    Japan Science and Technology Corporation, Regional Joint Research Project of Yamagata Prefecture,<BR> 2-2-1 Matsuei, Yamagata 990-2473, Japan Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jyounan, Yonezawa, Yamagata 992-8510, Japan
  • Chan Kin Pui
    Japan Science and Technology Corporation, Regional Joint Research Project of Yamagata Prefecture,<BR> 2-2-1 Matsuei, Yamagata 990-2473, Japan Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jyounan, Yonezawa, Yamagata 992-8510, Japan
  • Tanno Naohiro
    Japan Science and Technology Corporation, Regional Joint Research Project of Yamagata Prefecture,<BR> 2-2-1 Matsuei, Yamagata 990-2473, Japan Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jyounan, Yonezawa, Yamagata 992-8510, Japan

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A novel two-dimensional heterodyne detection technique is demonstrated for real-time, cross-sectional imaging using optical coherence domain reflectometry without lateral scanning. The present technique, which is based on a frequency synchronous detection scheme, enables parallel heterodyne detection with an imager such as a charge coupled device camera. Full-field, micrometer-scale, depth-resolved images acquired at a rate of 10 frame/s are presented.

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