首页> 外文会议>Conference on Laser Weapons technology 24-25 April 2000 Orlando, USA >Closed-Loop Performance of Pyramid Wavefront Sensor
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Closed-Loop Performance of Pyramid Wavefront Sensor

机译:金字塔波前传感器的闭环性能

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We consider the performance of the wavefront recdonstruction process when a Pyramid wavefront Sensor is used in a closed loop Adaptive Optics System. The Pyramid Sensor sensitivity in closed loop operations has been the subject of a first heuristic analysis showing that the snesor sensitivity is higher than that of a Shack-Hartmann sensor, at least when low order modes are considered. In this paper we evlauate the sensor accuracy by determining the closed loop reconstruction matrix. This is done using a diffractive analysis of the sensor behavior. Furthermore, knowledge of this matrix enables us to quantify the effect of error sources like sensor non linearity and photon noise on the reconstructed wavefront accuracy. Finally, a comparison of the performance of the Shack-Hartmann and Pyramid wavefront sensors is given.
机译:当在闭环自适应光学系统中使用金字塔波前传感器时,我们考虑了波前重构过程的性能。闭环操作中的金字塔传感器灵敏度一直是第一个启发式分析的主题,该分析表明,至少在考虑低阶模式时,传感器灵敏度高于Shack-Hartmann传感器。在本文中,我们通过确定闭环重构矩阵来评价传感器的精度。这是通过对传感器行为的衍射分析完成的。此外,对该矩阵的了解使我们能够量化误差源(如传感器非线性和光子噪声)对重构波前精度的影响。最后,对Shack-Hartmann和Pyramid波前传感器的性能进行了比较。

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