Compact holographic optical element-based electronic speckle pattern interferometer for rotation and vibration measurements

被引：1
|
作者：
Bavigadda, Viswanath [1 ,3 ]
Moothanchery, Mohesh [2 ]
Pramanik, Manojit [2 ]
Mihaylova, Emilia [1 ,4 ]
Toal, Vincent [1 ]
机构：
[1] Dublin Inst Technol, Ctr Ind & Engn Opt, Dublin, Ireland
[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore, Singapore
[3] European Gravitat Observ, Cascina, PI, Italy
[4] Agr Univ, Dept Math Informat & Phys, Plovdiv, Bulgaria
来源：
PRACTICAL HOLOGRAPHY XXXI: MATERIALS AND APPLICATIONS | 2017年 / 10127卷
关键词：
Holographic optical elements; ESPI; Speckle; Phase stepping;
D O I：
10.1117/12.2251266
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An out-of-plane sensitive electronic speckle pattern interferometer (ESPI) using holographic optical elements (HOEs) for studying rotations and vibrations is presented. Phase stepping is implemented by modulating the wavelength of the laser diode in a path length imbalanced interferometer. The time average ESPI method is used for vibration measurements. Some factors influencing the measurements accuracy are reported. Some advantages and limitations of the system are discussed.
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页数：9
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