Wavefront division digital holography

被引：8

作者：

Zhang, Wenhui ^{[1
]}

Cao, Liangcai ^{[1
]}

Li, Rujia ^{[1
]}

Zhang, Hua ^{[1
]}

Zhang, Hao ^{[1
]}

Jiang, Qiang ^{[1
]}

Jin, Guofan ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Precis Measurement Technol & Instru, Dept Precis Instruments, Beijing 100084, Peoples R China

来源：

AIP ADVANCES | 2018年 / 8卷 / 05期

基金：

中国国家自然科学基金;

关键词：

QUANTITATIVE PHASE MICROSCOPY; SAGNAC INTERFEROMETER; SCANNING HOLOGRAPHY; CONTRAST;

D O I：

10.1063/1.5030077

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Digital holography (DH), mostly Mach-Zehnder configuration based, belongs to non-common path amplitude splitting interference imaging whose stability and fringe contrast are environmental sensitive. This paper presents a wavefront division DH configuration with both high stability and high-contrast fringes benefitting from quasi common path wavefront-splitting interference. In our proposal, two spherical waves with similar curvature coming from the same wavefront are used, which makes full use of the physical sampling capacity of the detectors. The interference fringe spacing can be adjusted flexibly for both in-line and off-axis mode due to the independent modulation to these two waves. Only a few optical elements, including the mirror-beam splitter interference component, are used without strict alignments, which makes it robust and easy-to-implement. The proposed wavefront division DH promotes interference imaging physics into the practical and miniaturized a step forward. The feasibility of this method is proved by the imaging of a resolution target and a water flea. (C) 2018 Author(s).

引用

页数：6

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