Eigenmode Wavefront Decoupling Algorithm for LC-DM Adaptive Optics Systems

doi:10.3390/app12157875

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	Eigenmode Wavefront Decoupling Algorithm for LC-DM Adaptive Optics Systems
	Y. K. Wang; D. Y. Li and C. B. Jin
	2022
发表期刊	Applied Sciences-Basel
卷号	12 期号:15 页码:16
摘要	Featured Application Adaptive optics in large aperture telescopes for wide band imaging. To realize the decoupling control of the dual corrector of liquid crystal (LC)-deformable mirror (DM) adaptive optics (AO) systems and prevent the loss of correction ability induced by coupling aberrations, a wavefront decoupling method based on DM eigenmodes was proposed. The coupling relationship of two correctors was studied, and the distribution of aberrations corrected using the DM and LC was investigated. First, a DM eigenmode matrix was derived according to the DM influence function. Then, aberrations were decomposed according to the Strehl ratio, and the projection of the LC response matrix on the DM eigenmode matrix, that is, the coupling term, was derived. Before using the LC corrector, the coupling item was eliminated for the decoupling of the two correctors, and the decoupling effect was verified through simulations. Finally, a 2 m telescope LC-DM AO system was developed to validate the proposed method. The simulation and experimental results showed that the root mean square of the DM-corrected residual after 55 eigenmodes' correction was 0.09 mu m. After decoupling correction, the resolution of the 700-1700 nm wide band improved from 1.1 to 1 times the diffraction limit, which is 1.2 times better than that obtained using the traditional Zernike mode correction.
DOI	10.3390/app12157875
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66608
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. K. Wang,D. Y. Li and C. B. Jin. Eigenmode Wavefront Decoupling Algorithm for LC-DM Adaptive Optics Systems[J]. Applied Sciences-Basel,2022,12(15):16.
APA	Y. K. Wang,&D. Y. Li and C. B. Jin.(2022).Eigenmode Wavefront Decoupling Algorithm for LC-DM Adaptive Optics Systems.Applied Sciences-Basel,12(15),16.
MLA	Y. K. Wang,et al."Eigenmode Wavefront Decoupling Algorithm for LC-DM Adaptive Optics Systems".Applied Sciences-Basel 12.15(2022):16.

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