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Co-phasing experiment of a segmented mirror using a combined broadband and two-wavelength algorithm
Li, Bin1; Yu, Wen-Hao2,3,4; Chen, Mo2,3,4; Tang, Jin-Long2,4; Xian, Hao2,4
2017
Source PublicationApplied Optics
ISSN1559-128X
Volume56Issue:32Pages:8871-8879
AbstractIn this paper, a broadband phasing algorithm is combined with a two-wavelength phasing algorithm to detect the piston error of a segmented mirror with the advantages of long range, high precision, and fast detection. Moreover, an active optics co-phasing experimental system of the segmented mirror is built to verify the algorithm’s effectiveness. The segmented mirror consists of four hexagonal segments, with flat-to-flat lengths of 100 mm and radii of curvature of 2000 mm. First, a Shack–Hartmann sensor and piezoelectric actuators are used to finely co-focus the segmented mirror. Then, the broadband phasing algorithm is used to reduce the piston error of the segmented mirror to several micrometers. Finally, the two-wavelength phasing algorithm is used to reduce the piston error of the segmented mirror to zero. The experimental results show that the measurement accuracy is better than 26 nm, and the adjustment accuracy is approximately 55 nm, which demonstrates that the combined algorithm is valuable for segmented-mirror co-phasing measurement and adjustment. © 2017 Optical Society of America.
KeywordErrors - Piezoelectric actuators - Pistons
Indexed BySCI ; Ei
Language英语
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8779
Collection自适应光学技术研究室(八室)
Affiliation1.School of Mechanotronics and Vehicle Engineering, East China Jiao-tong University, Nanchang, Jiangxi; 330013, China;
2.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China;
3.University of Chinese Academy of Sciences, Beijing; 100049, China;
4.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China
Recommended Citation
GB/T 7714
Li, Bin,Yu, Wen-Hao,Chen, Mo,et al. Co-phasing experiment of a segmented mirror using a combined broadband and two-wavelength algorithm[J]. Applied Optics,2017,56(32):8871-8879.
APA Li, Bin,Yu, Wen-Hao,Chen, Mo,Tang, Jin-Long,&Xian, Hao.(2017).Co-phasing experiment of a segmented mirror using a combined broadband and two-wavelength algorithm.Applied Optics,56(32),8871-8879.
MLA Li, Bin,et al."Co-phasing experiment of a segmented mirror using a combined broadband and two-wavelength algorithm".Applied Optics 56.32(2017):8871-8879.
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