Application of Terahertz Pulse Time-Domain Holography for Phase Imaging

Nikolay V. Petrov, Maxim S. Kulya, Anton N. Tsypkin, Victor G. Bespalov, Andrei Gorodetsky

Research output: Contribution to journalArticle

Abstract

Terahertz pulse time-domain holography (THz
PTDH) is the powerful technique for high-resolution amplitude
and phase THz imaging that allows mapping spectroscopic information across the imaged object. In this paper, we consider
most sought after applications of phase imaging provided by
this technique and experimentally demonstrate the ability of the
method to reconstruct smooth and stepped relief features of an
object that is transparent in THz region. Unlike the amplitude
distribution, which does not contain any significant information
in this case, phase distribution not only reveals the object qualitatively,but also allows the reconstruction of the object thicknessespattern, even in low signal-to-noise registration conditions. Mainlimitations of the proposed method, such as transverse resolutionand low signal-to-noise environment are carefully studied and mitigated.
Original languageEnglish
Pages (from-to)464-472
JournalIEEE Transactions on Terahertz Science and Technology
Volume6
Issue number3
DOIs
Publication statusPublished - 1 May 2016

Bibliographical note

This is an open access article freely available on the journal's website https://ieeexplore.ieee.org/document/7447823/

Keywords

  • Inverse diffraction problem
  • noise
  • nondestructive testing
  • phase retrieval
  • terahertz holography
  • terahertz imaging
  • terahertz radiation

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