Wavefront measuring algorithm with improved measurement resolution using a shack-hartmann sensor

An adaptive optics system needs to rapidly and accurately compensate for wavefront distortions within limit time. There is a trade-off between the measurement resolution and the measurement speed for an adaptive optics system using a Shack-Hartmann sensor. In this paper, we studied a fast-measuring algorithm for measuring wavefront with high resolution to improve the performance of an adaptive optics system. We investigated the relation between the measurement resolution and the measurement speed by using several measuring techniques of the wavefront. After the experiments, we decided on optimal conditions of signal processors for a wavefront measuring device using a Shack-Hartmann sensor and proposed an advanced estimated weighting factor to rapidly calculate the wavefront with a high measurement resolution. The wavefront measuring results and the relation between the measurement resolution and the measurement speed are shown and discussed in this paper