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题名:
Performance test and closed-loop correction experiment of a 20-element bimorph deformable mirror
作者: Ning Yu1,2; Yu Hao1,2; Zhou Hong1,3; Rao Chang-Hui1; Jiang Wen-Han1
刊名: ACTA PHYSICA SINICA
出版日期: 2009-07-01
卷号: 58, 期号:7, 页码:4717-4723
关键词: adaptive optics ; bimorph deformable mirror ; performance analysis ; closed-loop correction
文章类型: Article
英文摘要: Performances of a 20-element bimorph deformable mirror are measured and a closed-loop adaptive optics system, which consists of the bimorph mirror and a Shack-Hartmann wave-front sensor with 13 x 13 sub-aperture array, is established to test the mirror's capability of correcting static aberrations. Experimental results show that, the mean displacement response to voltage of discrete actuators is 0.57 mu m/100 V and that of defocus electrode is 1.09 mu m/100 V. The hysteresis of actuator is limited to ten percents of the maximal displacement. With the ambient temperature increasing from 13 degrees C to 25 degrees C, the P-V of defocus of the mirror surface is enlarged by 1.37 mu m and the P-V of other distortions, such as astigmatism, coma and spherical aberration, is enlarged by 0.15 mu m. The frequency response of the bimorph mirror is about 4 kHz. When the closed-loop control is on, intensity distributions at the image plane of distorted wave-fronts are effectively improved. The Strehl ratios increase from 0.02 to 0.95, and 0.03 to 0.54, respectively.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
收录类别: SCI
语种: 英语
WOS记录号: WOS:000268263700054
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3278
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Natl Univ Def Technol, Coll Photon Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Ning Yu,Yu Hao,Zhou Hong,et al. Performance test and closed-loop correction experiment of a 20-element bimorph deformable mirror[J]. ACTA PHYSICA SINICA,2009,58(7):4717-4723.
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