Fast phase diversity wavefront sensing for mirror control

被引：16

作者：

Lofdahl, MG ^{[1
]}

Duncan, AL ^{[1
]}

Scharmer, GB ^{[1
]}

机构：

[1] Lockheed Martin Missiles & Space, Ctr Adv Technol, Palo Alto, CA 94304 USA

来源：

ADAPTIVE OPTICAL SYSTEM TECHNOLOGIES, PARTS 1 AND 2 | 1998年 / 3353卷

关键词：

phase diversity; wavefront sensing; adaptive optics; Shack-Hartmann;

D O I：

10.1117/12.321703

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show with simulation experiments that closed-loop phase-diversity can be used without numerical guard-bands for wavefront sensing of low-order wavefronts from extended objects using broad-band filters. This may allow realtime correction at high bandwidth for certain applications. We also present a proper maximum likelihood treatment of Shack-Hartman data, which includes an imaging model to extract curvature information from the lenslet images. We demonstrate by simple simulations that this approach should allow higher-order wavefront information to be extracted than with with traditional Shack-Hartmann wavefront sensing for a given number of lenslets.

引用

页码：952 / 963

页数：12