Wavefront-aberration sorting and correction for a dual-deformable-mirror adaptive-optics system

摘要

Many next-generation adaptive optics (AO) systems for vision will have two deformable mirrors (DMs) in-nstead of one: a high-stroke, low-resolution mirror (the woofer) and a low-stroke, high-resolution mirror (thentweeter). We developed a zonal wavefront-control algorithm and validated it using simulations. Rather thannseparating the woofer and tweeter corrections into two independent control processes or using a modal de-ncomposition, the algorithm we proposed uses wavefront slope measurements from a single Shack–Hartmannnwavefront sensor to generate control signals for both deformable mirrors within a single zonal control. AnLagrange multiplier is chosen to integrate two DMs into a single-DM wavefront control, and a damped least-nsquares control is employed to suppress the correlation between the two DMs