arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0707.2876physics.opticsphysics.ins-det
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利用光学分箱改进夏克-哈特曼传感器

Shack-Hartmann sensor improvement using optical binning

Alastair Basden, Deli Geng, Dani Guzman, Tim Morris, Richard Myers, Chris Saunter

摘要:

我们提出了一种设计改进最近提出的类型的夏克哈特曼波前传感器,使用圆柱形(透镜状)小透镜阵列。改进的传感器设计使用光学合并,并且需要比相应的常规或圆柱形Shack-Hartmann传感器显著更少的检测器像素,因此检测器读出噪声导致更少的信号劣化。此外,检测器读出时间显著减少,这减少了闭环系统的延迟和数据处理要求。我们提供了简单的分析噪声的考虑和蒙特卡罗模拟,并表明,光学装箱的夏克-哈特曼传感器可以提供更好的性能比传统的同行在大多数实际情况下,我们的设计是特别适合用于天文自适应光学系统。

英文摘要:

We present a design improvement for a recently proposed type of Shack-Hartmann wavefront sensor that uses a cylindrical (lenticular) lenslet array. The improved sensor design uses optical binning and requires significantly fewer detector pixels than the corresponding conventional or cylindrical Shack-Hartmann sensor, and so detector readout noise causes less signal degradation. Additionally, detector readout time is significantly reduced, which reduces the latency for closed loop systems, and data processing requirements. We provide simple analytical noise considerations and Monte-Carlo simulations, and show that the optically binned Shack-Hartmann sensor can offer better performance than the conventional counterpart in most practical situations, and our design is particularly suited for use with astronomical adaptive optics systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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