Detecting higher-order wavefront errors with an astigmatic hybrid wavefront sensor.

Abstract

The reconstruction of wavefront errors from measurements over subapertures can be made more accurate if a fully characterized quadratic surface can be fitted to the local wavefront surface. An astigmatic hybrid wavefront sensor with added neural network postprocessing is shown to have this capability, provided that the focal image of each subaperture is sufficiently sampled. Furthermore, complete local curvature information is obtained with a single image without splitting beam power.

Cite this paper

@article{Barwick2009DetectingHW, title={Detecting higher-order wavefront errors with an astigmatic hybrid wavefront sensor.}, author={Shane Barwick}, journal={Optics letters}, year={2009}, volume={34 11}, pages={1690-2} }