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Visible light high-resolution imaging system for large aperture telescope by liquid crystal adaptive optics with phase diversity technique
Xu, Z. H.; C. L. Yang; P. G. Zhang; X. Y. Zhang; Z. L. Cao; Q. Q. Mu; Q. Sun and L. Xuan
2017
发表期刊Scientific Reports
卷号7
摘要There are more than eight large aperture telescopes (larger than eight meters) equipped with adaptive optics system in the world until now. Due to the limitations such as the difficulties of increasing actuator number of deformable mirror, most of them work in the infrared waveband. A novel two-step high-resolution optical imaging approach is proposed by applying phase diversity (PD) technique to the open-loop liquid crystal adaptive optics system (LC AOS) for visible light high-resolution adaptive imaging. Considering the traditional PD is not suitable for LC AOS, the novel PD strategy is proposed which can reduce the wavefront estimating error caused by non-modulated light generated by liquid crystal spatial light modulator (LC SLM) and make the residual distortions after open-loop correction to be smaller. Moreover, the LC SLM can introduce any aberration which realizes the free selection of phase diversity. The estimating errors are greatly reduced in both simulations and experiments. The resolution of the reconstructed image is greatly improved on both subjective visual effect and the highest discernible space resolution. Such technique can be widely used in large aperture telescopes for astronomical observations such as terrestrial planets, quasars and also can be used in other applications related to wavefront correction.
收录类别sci ; ei
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59359
专题中科院长春光机所知识产出
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GB/T 7714
Xu, Z. H.,C. L. Yang,P. G. Zhang,et al. Visible light high-resolution imaging system for large aperture telescope by liquid crystal adaptive optics with phase diversity technique[J]. Scientific Reports,2017,7.
APA Xu, Z. H..,C. L. Yang.,P. G. Zhang.,X. Y. Zhang.,Z. L. Cao.,...&Q. Sun and L. Xuan.(2017).Visible light high-resolution imaging system for large aperture telescope by liquid crystal adaptive optics with phase diversity technique.Scientific Reports,7.
MLA Xu, Z. H.,et al."Visible light high-resolution imaging system for large aperture telescope by liquid crystal adaptive optics with phase diversity technique".Scientific Reports 7(2017).
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