Abstract
We present a fast method for the wavefront reconstruction from pyramid wavefront sensor (P-WFS) measurements. The method is based on an analytical relation between pyramid and Shack–Hartmann sensor (SH-WFS) data. The algorithm consists of two steps—a transformation of the P-WFS data to SH data, followed by the application of cumulative reconstructor with domain decomposition, a wavefront reconstructor from SH-WFS measurements. The closed loop simulations confirm that our method provides the same quality as the standard matrix vector multiplication method. A complexity analysis as well as speed tests confirm that the method is very fast. Thus, the method can be used on extremely large telescopes, e.g., for eXtreme adaptive optics systems.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Iuliia Shatokhina and Ronny Ramlau
Appl. Opt. 56(22) 6381-6390 (2017)
Matthias Rosensteiner
J. Opt. Soc. Am. A 28(10) 2132-2138 (2011)
Victoria Hutterer and Ronny Ramlau
Appl. Opt. 57(30) 8790-8804 (2018)