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

来源：

OPTICS LETTERS | 2020年 / 45卷 / 16期

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

页码：4412 / 4415

页数：4

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