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首页> 外文期刊>Journal of the Optical Society of America, A. Optics, image science, and vision >Multiconjugate adaptive optics results from the laboratory for adaptive optics MCAO/MOAO testbed
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Multiconjugate adaptive optics results from the laboratory for adaptive optics MCAO/MOAO testbed

机译：实验室用于自适应光学MCAO / MOAO测试台的多共轭自适应光学结果

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摘要

We report on the development of wavefront reconstruction and control algorithms for multiconjugate adaptive optics (MCAO) and the results of testing them in the laboratory under conditions that simulate an 8 meter class telescope. The University of California Observatories (UCO) Lick Observatory Laboratory for Adaptive Optics multiconjugate testbed allows us to test wide-field-of-view adaptive optics systems as they might be instantiated in the near future on giant telescopes. In particular, we have been investigating the performance of MCAO using five laser beacons for wavefront sensing and a minimum-variance algorithm for control of two conjugate deformable mirrors. We have demonstrated improved Strehl ratio and enlarged field-of-view performance when compared to conventional AO techniques. We have demonstrated improved MCAO performance with the implementation of a routine that minimizes the generalized isoplanatism when turbulent layers do not correspond to deformable mirror conjugate altitudes. Finally, we have demonstrated suitability of the system for closed loop operation when configured to feed back conditional mean estimates of wavefront residuals rather than the directly measured residuals. This technique has recently been referred to as the "pseudo-open-loop" control law in the literature.
机译：我们报告了多共轭自适应光学（MCAO）的波前重建和控制算法的发展以及在模拟8米级望远镜的条件下在实验室中对其进行测试的结果。加州大学天文台（UCO）里克天文台自适应光学多共轭测试台实验室使我们能够测试宽视场自适应光学系统，因为它们可能会在不久的将来用巨型望远镜实例化。特别是，我们一直在研究使用五个激光信标进行波前感测和使用最小方差算法来控制两个共轭可变形镜的MCAO的性能。与传统的AO技术相比，我们已经证明了改善的Strehl比和更大的视野性能。当湍流层不对应于可变形反射镜共轭高度时，通过执行例程可以使广义等平面性最小化，我们已经证明了MCAO性能得到了改善。最后，当配置为反馈波前残差的条件均值估计而不是直接测量的残差时，我们证明了该系统适用于闭环操作。该技术最近在文献中被称为“伪开环”控制定律。

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