Resolution limits of terahertz ptychography

Lorenzo Valzania; Erwin Hack; Peter Zolliker; Rolf Brönnimann; Thomas Feurer

doi:10.1117/12.2307157

24 May 2018 Resolution limits of terahertz ptychography

Lorenzo Valzania, Erwin Hack, Peter Zolliker, Rolf Brönnimann, Thomas Feurer

Proceedings Volume 10677, Unconventional Optical Imaging; 1067720 (2018) https://doi.org/10.1117/12.2307157
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

We present a study on the resolution limits and resolution factors of terahertz (THz) ptychography. Simulations of a binary amplitude object show that ptychography shares the same intrinsic resolution factors with digital holography, i.e. it is diffraction-limited. Reconstructions of amplitude and phase objects obtained from holographic and ptychographic experiments are comparable. A lateral resolution of around one wavelength λ is achieved on an amplitude object, while a depth resolution of around λ/5 is reported on a weakly diffracting phase object. THz ptychography is expected to complement THz holography for imaging biological samples and THz transparent specimens.

Conference Presentation

Citation Download Citation

Lorenzo Valzania, Erwin Hack, Peter Zolliker, Rolf Brönnimann, and Thomas Feurer "Resolution limits of terahertz ptychography", Proc. SPIE 10677, Unconventional Optical Imaging, 1067720 (24 May 2018); https://doi.org/10.1117/12.2307157

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