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Proceedings Paper

Full-field stress measurement based on phase-shifting ptychographic iterative engine
Author(s): Bei Cheng; Xuejie Zhang ; Cheng Liu; Jianqiang Zhu
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Paper Abstract

Stress measurement is significant to evaluate and predict optical behaviour of the birefringence components. The separation of two principal stress components is a difficult problem due to the coupling between them. A new PIE-based stress measurement method is proposed. Combining with the four-step phase-shifting measuring method, the complex amplitude transmittance functions of the sample in different phase-shifting states are reconstructed. Then the quantitative stress birefringence information are extracted respectively from the amplitude information and phase information. This method can achieve the complete stress information measurement and is especially suitable for the large-size samples.

Paper Details

Date Published: 15 November 2018
PDF: 6 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109645D (15 November 2018); doi: 10.1117/12.2506333
Show Author Affiliations
Bei Cheng, Shanghai Institute of Optics and Fine Mechanics (China)
Shanghai Tech Univ. (China)
Univ. of Chinese Academy of Sciences (China)
Xuejie Zhang , Shanghai Institute of Optics and Fine Mechanics (China)
Cheng Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Jianqiang Zhu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yidong Huang, Editor(s)

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