Fast Modal Wave-Front Reconstruction.

Poyneer, L. A.

Technical Information Center Oak Ridge Tennessee

关键词: Adaptive optics;    Wavefront reconstruction;    Imaging systems;    Optics;    Phase aberration;   

RP-ID  :  DE200515014303

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In this project I apply the concepts and techniques learned in Applied Computational Harmonic Analysis (ACHA) to my research. I am currently developing fast wave-front reconstruction techniques for high-order Adaptive Optics systems. The fast reconstruction technique which we plan on using is based on the DFT. Reconstruction and optional filtering occur in the frequency domain. This is a significantly different approach than current methods of wave-front reconstruction, which use a matrix multiply to do the reconstruction. The latest advances in these methods use modal control, which effectively seeks to control individual modes (or basis functions) as opposed to the signal on a point-by-point basis. These techniques can be adapted to incorporate statistical knowledge. My research task to is figure out how to do such a modal approach with my fast reconstructor.