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Thermal stability test and analysis of a 20-actuator bimorph deformable mirror
Ning Yu1,2; Zhou Hong2,3; Yu Hao1,2; Rao Chang-Hui2; Jiang Wen-Han2
Source PublicationCHINESE PHYSICS B
Volume18Issue:3Pages:1089-1095
2009-03-01
Language英语
Indexed BySCI
WOS IDWOS:000263912300042
SubtypeArticle
AbstractOne of the important characteristic of adaptive mirrors is the thermal stability of surface flatness. In this paper, the thermal stability from 13 degrees C to 25 degrees C of a 20-actuator bimorph deformable mirror is tested by a Shack-Hartmann wavefront sensor. Experimental results show that, the surface P-V of bimorph increases nearly linearly with ambient temperature. The ratio is 0.11 mu m/degrees C and the major component of surface displacement is defocused, compared with which, astigmatism, coma and spherical aberration contribute very small. Besides, a finite element model is built up to analyse the influence of thickness, thermal expansion coefficient and Young's modulus of materials on thermal stability. Calculated results show that bimorph has the best thermal stability when the materials have the same thermal expansion coefficient. And when the thickness ratio of glass to PZT is 3 and Young's modulus ratio is approximately 0.4, the surface instability behaviour of the bimorph manifests itself most severely.
KeywordAdaptive Optics Bimorph Deformable Mirror Thermal Stability
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/3258
Collection光电技术研究所被WoS收录文章
Affiliation1.Natl Univ Def Technol, Coll Photon Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Ning Yu,Zhou Hong,Yu Hao,et al. Thermal stability test and analysis of a 20-actuator bimorph deformable mirror[J]. CHINESE PHYSICS B,2009,18(3):1089-1095.
APA Ning Yu,Zhou Hong,Yu Hao,Rao Chang-Hui,&Jiang Wen-Han.(2009).Thermal stability test and analysis of a 20-actuator bimorph deformable mirror.CHINESE PHYSICS B,18(3),1089-1095.
MLA Ning Yu,et al."Thermal stability test and analysis of a 20-actuator bimorph deformable mirror".CHINESE PHYSICS B 18.3(2009):1089-1095.
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