Continuous-wave terahertz reflective ptychography by oblique illumination

被引:16
|
作者
Rong, Lu [1 ,2 ]
Tang, Chao [1 ]
Zhao, Yuchen [3 ]
Tan, Fangrui [1 ]
Wang, Yunxin [1 ,2 ]
Zhao, Jie [1 ]
Wang, Dayong [1 ,2 ]
Georges, Marc [3 ]
机构
[1] Beijing Univ Technol, Fac Sci, Sch Phys & Optoelect, 100 Ping Le Yuan, Beijing 100124, Peoples R China
[2] Beijing Engn Res Ctr Precis Measurement Technol &, 100 Ping Le Yuan, Beijing 100124, Peoples R China
[3] Univ Liege, Ctr Spatial Liege, STAR Res Unit, Liege Sci Pk, B-4031 Angleur, Belgium
基金
中国国家自然科学基金;
关键词
27;
D O I
10.1364/OL.400506
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
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 fullfield 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. (C) 2020 Optical Society of America
引用
收藏
页码:4412 / 4415
页数:4
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