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Topography of hidden objects using THz digital holography with multi-beam interferences.

Authors :
Valzania L
Zolliker P
Hack E
Source :
Optics express [Opt Express] 2017 May 15; Vol. 25 (10), pp. 11038-11047.
Publication Year :
2017

Abstract

We present a method for the separation of the signal scattered from an object hidden behind a THz-transparent sample in the framework of THz digital holography in reflection. It combines three images of different interference patterns to retrieve the amplitude and phase distribution of the object beam. Comparison of simulated with experimental images obtained from a metallic resolution target behind a Teflon plate demonstrates that the interference patterns can be described in the simple form of three-beam interference. Holographic reconstructions after the application of the method show a considerable improvement compared to standard reconstructions exclusively based on Fourier transform phase retrieval.

Details

Language :
English
ISSN :
1094-4087
Volume :
25
Issue :
10
Database :
MEDLINE
Journal :
Optics express
Publication Type :
Academic Journal
Accession number :
28788789
Full Text :
https://doi.org/10.1364/OE.25.011038