Wavefront sensor and wavefront corrector matching in adaptive optics.
Wavefront sensor and wavefront corrector matching in adaptive optics.
复制标题
DOI：
10.1364/oe.15.002762
复制
发表时间：
2007-03
期刊：
影响因子：
3.8
通讯作者：
A. Dubra
中科院分区：
文献类型：
--
作者：
A. Dubra
提出了通过最小化条件数和平均波前方差来匹配波前校正器和波前传感器的方法。研究了在光子噪声、背景噪声和电子噪声存在的情况下，两个连续片变形镜和一个方形填充几何形状的Shack-Hartmann波前传感器的特殊情况。给出了两种可变形反射镜各致动器的最优透镜数，并给出了最优对准的简单实验方法。结果表明，即使使用低成本的现成的Shack-Hartmann阵列，其透镜间距不一定与波前校正元件相匹配，也可以实现高性能的自适应光学。
Matching wavefront correctors and wavefront sensors by minimizing the condition number and mean wavefront variance is proposed. The particular cases of two continuous-sheet deformable mirrors and a Shack-Hartmann wavefront sensor with square packing geometry are studied in the presence of photon noise, background noise and electronics noise. Optimal number of lenslets across each actuator are obtained for both deformable mirrors, and a simple experimental procedure for optimal alignment is described. The results show that high-performance adaptive optics can be achieved even with low cost off-the-shelf Shack-Hartmann arrays with lenslet spacing that do not necessarily match those of the wavefront correcting elements.