Abstract
Adaptive optics systems for large-aperture solar telescopes, especially multiconjugate adaptive optics systems, suffer from a fundamental trade-off between wavefront sampling rate and sub-aperture resolution. We introduce an enhanced-resolution Shack–Hartmann wavefront sensing method that decouples sub-aperture resolution from the desired wavefront sampling rate. We experimentally verified the validity of this method. Results show that by synthesizing multiple low-spatial samplings, this method is capable to sense higher-frequency aberrations beyond any low-spatial sampling involved in the synthesis, and it allows higher sub-aperture resolution and higher operating bandwidths, which can better fulfill the needs of solar adaptive optics.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Erkin Sidick, Joseph J. Green, Rhonda M. Morgan, Catherine M. Ohara, and David C. Redding
Opt. Lett. 33(3) 213-215 (2008)
Theodore B. DuBose, Dennis F. Gardner, and Abbie T. Watnik
Opt. Lett. 45(7) 1699-1702 (2020)
L. Gilles and B. L. Ellerbroek
Opt. Lett. 33(10) 1159-1161 (2008)