Abstract

Massive usage scenarios prompt the prosperity of terahertz (THz) reflective imaging methods. In this Letter, we apply ptychography to continuous-wave THz reflective imaging. Our scheme has a compact lensless layout and uses a full-field oblique-illumination recording mode. Diffraction patterns are corrected through tilted plane correction. This method can be used to retrieve the complex-valued object function and to suppress the negative effect of non-uniform illumination. The feasibility is investigated using two metal samples.

© 2020 Optical Society of America

Multi-layered full-field phase imaging using continuous-wave terahertz ptychography

Dayong Wang, Bing Li, Lu Rong, Fangrui Tan, John J. Healy, Jie Zhao, and Yunxin Wang
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Terahertz ptychography

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Probe position correction based on overlapped object wavefront cross-correlation for continuous-wave terahertz ptychography

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Opt. Express 27(2) 938-950 (2019)