Wavefront-aberration sorting and correction for a dual-deformable-mirror adaptive-optics system.

Wavefront-aberration sorting and correction for a dual-deformable-mirror adaptive-optics system.
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DOI:
10.1364/ol.33.002602
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发表时间:
2008-11-15
期刊:
影响因子:
3.6
通讯作者:
Burns SA
Burns SA
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zou W;Qi X;Burns SA

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许多用于视觉的下一代自适应光学(AO)系统将具有两个可变形反射镜(DM)而不是一个:一个高行程、低分辨率反射镜(低音扬声器)和一个低行程、高分辨率反射镜(高音扬声器)。我们开发了一个带状波前控制算法,并使用模拟验证。我们提出的算法不是将低音扬声器和高音扬声器校正分离成两个独立的控制过程或使用模态分解,而是使用来自单个Shack-Hartmann波前传感器的波前斜率测量来在单个分区控制内为两个可变形反射镜生成控制信号。选择一个拉格朗日乘子将两个DM集成为一个DM波前控制,并采用阻尼最小二乘控制来抑制两个DM之间的相关性。
Many next-generation adaptive optics (AO) systems for vision will have two deformable mirrors (DMs) instead of one: a high-stroke, low-resolution mirror (the woofer) and a low-stroke, high-resolution mirror (the tweeter). We developed a zonal wavefront-control algorithm and validated it using simulations. Rather than separating the woofer and tweeter corrections into two independent control processes or using a modal decomposition, the algorithm we proposed uses wavefront slope measurements from a single Shack–Hartmann wavefront sensor to generate control signals for both deformable mirrors within a single zonal control. A Lagrange multiplier is chosen to integrate two DMs into a single-DM wavefront control, and a damped least-squares control is employed to suppress the correlation between the two DMs.
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发表时间: 1976-01-01
影响因子: --
作者:
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