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Performance comparison between two kinds of variable curvature mirrors: Mathematical analysis, prototype design, experimental demonstration, and application potentials in realizing non-moving element optical zooming
Zhao, Hui1; Xie, Xiaopeng1,2; Xu, Liang1; Zou, Gangyi1; Li, Chuang1; Fan, Xuewu1
2019
Conference Name9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, AOMATT 2018
Source Publication9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Volume10837
Conference Date2018-06-26
Conference PlaceChengdu, China
PublisherSPIE
Contribution Rank1
AbstractVariable curvature mirror (VCM) is a long-history technique used to correct the defocus and spherical aberrations caused by thermal lens effect in solid-state laser. In recent years, the probability of VCM in realizing non-moving element optical zoom imaging has been paid much attention and how to generate a large enough saggitus variation while still maintaining good enough surface figure accuracy is the research hot topic. In this manuscript, two kinds of VCM has been studied and the advantages of pressurization actuation based VCM having variable mirror thickness has been confirmed. Compared with the traditional annular force actuation based VCM with constant mirror thickness, the pressurization actuation based one having variable mirror thickness is capable of providing a saggitus variation of larger than 35um and still maintaining its surface figure accuracy superior to 1/10λ(λ=632.8nm). Besides that, it is found that spherical aberration plays a main role in leading to the degradation of surface figure accuracy and the surface figure accuracy at extreme curvature could be improved to about 1/40λ(λ=632.8nm) by only removing spherical aberration. Therefore, when applying pressurization actuation based VCM to realize non-moving element optical zooming, the wavefront sensing and subsequent digital correction to eliminate the spherical aberration will become a necessary step. © 2019 SPIE.
Department空间光学应用研究室
DOI10.1117/12.2504861
Indexed ByEI
ISBN9781510623163
Language英语
ISSN0277786X;1996756X
EI Accession Number20190506432478
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/31234
Collection空间光学应用研究室
Affiliation1.Space Optics Lab, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an; 710019, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Zhao, Hui,Xie, Xiaopeng,Xu, Liang,et al. Performance comparison between two kinds of variable curvature mirrors: Mathematical analysis, prototype design, experimental demonstration, and application potentials in realizing non-moving element optical zooming[C]:SPIE,2019.
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