Abstract

A Shack-Hartmann wavefront sensor processes images formed by an array of lenses to determine the local gradient of the wavefront using simple centroiding algorithms. We compare these with a method using the first Fourier coefficient of the image, and show how this can achieve extreme rates when implemented on an FPGA. On-sky results from a small adaptive optics system are given using this method.

© 2015 Optical Society of America

PDF Article
More Like This
Real-time Depth-resolved Shack-Hartmann Measurements

Jingyu Wang and Adrian Gh. Podoleanu
88020B European Conference on Biomedical Optics (ECBO) 2013

FPGA Implementations of Low Latency Centroiding Algorithms for Adaptive Optics

Manuel Cegarra Polo, Fanpeng Kong, and Andrew Lambert
OTh3E.3 Adaptive Optics: Analysis, Methods & Systems (AOMS) 2018

Time-domain coherence-gated Shack–Hartmann wavefront sensor

Jingyu Wang and Adrian Gh Podoleanu
80911L European Conference on Biomedical Optics (ECBO) 2011

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription