Continuous-wave terahertz reflective ptychography by oblique illumination
Lü Rong, Chao Tang, Yuchen Zhao, Fangrui Tan, Yunxin Wang, Jie Zhao, Dayong Wang, Marc Georges
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.
Topics & Concepts
Terahertz radiationPtychographyOpticsOblique caseDiffractionPhysicsPhilosophyLinguisticsAdvanced X-ray Imaging TechniquesTerahertz technology and applicationsCrystallography and Radiation Phenomena