Adaptive Optics is a set of methods used to overcome the effect of aberrations and thus improve the image quality. Since principles of feedback control are used to correct aberrations, a measurement of controlled variable is required. The most commonly measured quantity is first derivative of wavefront provided by the Shack-Hartmann sensor. Another possibility is to measure wavefront Laplacian, i.e. curvature. In this talk I will summarize results of my MSc thesis, in which I built an adaptive optics closed loop based on the wavefront curvature sensor.
Host: M. Aspelmeyer