In-plane ESPI with unlimited angle of view for multi-object rotation angle determination

被引：1

作者：

Jiang, Hanyang ^{[1
,2
]}

Wang, Jingwei ^{[1
]}

Yang, Boshuo ^{[3
]}

Dai, Meiling ^{[4
]}

Peng, Guangjian ^{[1
]}

Yang, Fujun ^{[2
]}

He, Xiaoyuan ^{[2
]}

机构：

[1] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310023, Peoples R China

[2] Southeast Univ, Sch Civil Engn, Jiangsu Key Lab Engn Mech, Nanjing 211189, Peoples R China

[3] Natl Univ Singapore, Coll Design & Engn, Singapore, Singapore

[4] Guangdong Univ Technol, Sch Civil & Transportat Engn, Guangzhou 510006, Peoples R China

来源：

OPTICS LETTERS | 2023年 / 48卷 / 22期

基金：

中国国家自然科学基金;

关键词：

Interferometry; -; Rotation; Speckle;

D O I：

10.1364/OL.504508

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The in-plane electronic speckle pattern interferometry (ESPI), implemented in a Michelson stellar interferometer-like configuration, offers high sensitivity and dynamic measurement. However, its limited angle of view (AOV) remains a major challenge for the rotation angle determi-nation of multiple objects. In this Letter, we analyze the main factors that influence the AOV of the in-plane ESPI and propose an "image transmitting" approach to enlarge the AOV. With the aid of a folded dual-telescope imaging system, we develop an AOV-unlimited interferometer that can determine multi-object rotation angles in real time. The practicability of the interferometer is demonstrated by the application in real-time measuring of the rotation angles of the disks within a 2D granular system. (c) 2023 Optica Pub-lishing Group

引用

页码：5827 / 5830

页数：4

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