Journal
OPTICS EXPRESS
Volume 25, Issue 10, Pages 11038-11047Publisher
Optica Publishing Group
DOI: 10.1364/OE.25.011038
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Funding
- Swiss National Science Foundation (SNSF) [200021_160078/1]
- Swiss National Science Foundation (SNF) [200021_160078] Funding Source: Swiss National Science Foundation (SNF)
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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. (C) 2017 Optical Society of America
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