大尺寸光学元件光强传输方程非干涉在位检测方法研究
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1.Multi-surface phase demodulation based on the selective weighted multi-step algorithms
- 关键词:
- Phase modulation;Demodulation;Iterative methods;Optical variables measurement;Interferometry;Accurate measurement;Arbitrary positions;Measurement methods;Parallel plates;Phase demodulation;Phase shifting Interferometry;Residual error;Three-dimensional data
- Chang, Lin;Yu, Yingjie;Zheng, Weiwei;Xu, Qulei;Wang, Chen;Sun, Tao;Liu, Tingtui
- 《2020 International Conference on Civil Engineering and Clean Energy, ICCECE 2020》
- 2020年
- September 27, 2020
- Chengdu, Virtual, China
- 会议
The transparent parallel plate plays a practical role in the optical system. The accurate measurement of its surface topography is a great importance of quantifying and evaluating the performance of the transparent plate. Based on the phase shifting interferometry, a measurement method using triple iteration and selective phase demodulation algorithms is presented, which can realize multi-surface interferometry at arbitrary positions. Through the design of the three-dimensional data matrix used to store errors, its element pixels can be read out a wealth of key parameter information, thus guiding the design of the algorithm, realizing the unity of the actual use of the algorithm and the measurement scheme, achieving the multi-surface interference measurement with the minimum residual errors with arbitrary cavity length, and expanding the limitations of the traditional weighted multi-step algorithm.
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© Published under licence by IOP Publishing Ltd.2.Simulation Analysis on Phase Retrieval using Transport of Intensity with an Off-axis Hologram
- 关键词:
- ;Off-axis;Optimized parameter;Phase distribution;Phase retrieval;Simulation analysis;Single off-axis hologram;Transport of intensity
- Zhou, Wen-Jing;Shen, Hongxia;Guan, Xiaofei;Yu, Yingjie;Zhang, Hongbo;Poon, Ting-Chung
- 《28th IEEE International Symposium on Industrial Electronics, ISIE 2019》
- 2019年
- June 12, 2019 - June 14, 2019
- Vancouver, BC, Canada
- 会议
This paper presents simulation analysis on phase retrieval using the transport-of-intensity algorithm along with an off-axis hologram. Different phase distributions, phase values and defocused distances are analyzed in order to obtain the optimized parameters for reconstruction.
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© 2019 IEEE.
