Numerical phase correction method for terahertz time-domain reflection spectroscopy

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  • Erik M. Vartiainen
    Lappeenranta University of Technology Department of Electrical Engineering, , P.O. Box 20, Fin-53851 Lappeenranta, Finland
  • Yusuke Ino
    University of Tokyo Department of Applied Physics, , and SORST, Japan Science and Technology Agency (JST), Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
  • Ryo Shimano
    University of Tokyo Department of Applied Physics, , and SORST, Japan Science and Technology Agency (JST), Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
  • Makoto Kuwata-Gonokami
    University of Tokyo Department of Applied Physics, , and SORST, Japan Science and Technology Agency (JST), Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
  • Yuri P. Svirko
    University of Joensuu Department of Physics, , P.O. Box 111, Fin-80101 Joensuu, Finland
  • Kai-Erik Peiponen
    University of Joensuu Department of Physics, , P.O. Box 111, Fin-80101 Joensuu, Finland

説明

<jats:p>We propose a numerical method for the misplacement phase error correction in terahertz time-domain reflection spectroscopy (THz-TDRS). The developed algorithm is based on the maximum entropy principle and can be readily implemented into data processing, allowing one to reveal material parameters of the opaque materials from the THz reflection measurements. The method resolves the phase retrieval problem in the THz-TDRS and dramatically simplifies the experimental procedure.</jats:p>

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