Xi'an Institute of Optics and Precision Mechanics,CAS
Manufacturing and testing of surface modified silicon carbide aspheric mirror | |
Ding, Jiao Teng1,2; Fan, Xue Wu1; Pang, Zhi Hai1; Feng, Liang Jie1; Chen, Qin Fang1; Ma, Zhen1 | |
2019 | |
会议名称 | 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, AOMATT 2018 |
会议录名称 | 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes |
卷号 | 10837 |
会议日期 | 2018-06-26 |
会议地点 | Chengdu, China |
出版者 | SPIE |
产权排序 | 1 |
摘要 | The manufacturing and testing of a surface modified silicon carbide mirror with a bowl-shaped structure was introduced. The entire process flow includes pre-modification silicon carbide substrate processing, silicon carbide substrate surface modification, and silicon modified layer processing. Firstly, before the modification, the conventional processing method of silicon carbide was used, and the effect of the support form on the figure was eliminated by multiple direction rotation testing.At the same time, the self-aligned compensation cross-test was completed and the accuracy of the aspherical surface coefficient was verified. In addition, the polishing process of the silicon modified layer material was studied, and the optimum process parameters suitable for polishing the silicon modified layer material were found out. Based on the above experiments, the modified optical processing adopts a combination of two kinds of polishing technology: flexible chemical mechanical polishing (FCMP)and ion beam figuring (IBF).The surface roughness and surface finish of silicon modified layer are improved by flexible chemical mechanical polishing technology. The high figure accuracy of silicon modified layer is achieved finally by ion beam figuring technology. Finally, the final result of the mirror after IBF is:the RMS values of the figure and roughness in the Φ450 mm aperture is 0.01λ (λ=632.8 nm) and 0.52 nm. The mirror's processing results fully meet the design specifications. © 2019 SPIE. |
作者部门 | 先进光学元件试制中心 |
DOI | 10.1117/12.2504853 |
收录类别 | EI |
ISBN号 | 9781510623163 |
语种 | 英语 |
ISSN号 | 0277786X;1996756X |
EI入藏号 | 20190506432471 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/31235 |
专题 | 先进光学元件试制中心 |
作者单位 | 1.Xi'an Institute of Optics and Precision Mechanics of CAS, Shannxi Xi'an; 710119, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China |
推荐引用方式 GB/T 7714 | Ding, Jiao Teng,Fan, Xue Wu,Pang, Zhi Hai,et al. Manufacturing and testing of surface modified silicon carbide aspheric mirror[C]:SPIE,2019. |
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