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.
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 language | English |
|---|---|
| Pages (from-to) | 464-472 |
| Journal | IEEE Transactions on Terahertz Science and Technology |
| Volume | 6 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 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