Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Advanced techniques for Fourier transform wavefront reconstruction

[+] Author Affiliations
Lisa A. Poyneer

Lawrence Livermore National Lab. (USA)

Proc. SPIE 4839, Adaptive Optical System Technologies II, 1023 (February 1, 2003); doi:10.1117/12.459461
Text Size: A A A
From Conference Volume 4839

  • Adaptive Optical System Technologies II
  • Peter L. Wizinowich; Domenico Bonaccini
  • Waikoloa, Hawai'i, USA | August 22, 2002


The performance of Fourier transform (FT) reconstructors in large adaptive optics systems with Shack-Hartmann sensors and a deformable mirror is analyzed. FT methods, which are derived for point-based geometries, are adapted for use on continuous systems. Analysis and simulation show how to compensate for effects such as misalignment of the deformable mirror and wavefront sensor gain. Further filtering methods to reduce noise and improve performance are presented. These modifications can be implemented at the filtering stage, preserving the speed of FT reconstruction and providing flexibility by allowing on-the-fly filter adaptation. Simulation of a large system shows how compensated FT methods can have equivalent or better performance to slower vector-matrix-multiply methods. The best-performing FT method is the fastest to compute, has lower noise propagation and does not suffer from waffle errors.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Lisa A. Poyneer
"Advanced techniques for Fourier transform wavefront reconstruction", Proc. SPIE 4839, Adaptive Optical System Technologies II, 1023 (February 1, 2003); doi:10.1117/12.459461; http://dx.doi.org/10.1117/12.459461

Access This Article
Sign In to Access Full Content
Please Wait... Processing your request... Please Wait.
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).



Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections


Buy this article ($18 for members, $25 for non-members).
Sign In