COMPARISON OF WAVE FRONT CONTROL ALGORITHM FOR ANNULAR LASER BEAM

In this paper, the configurations for wavefront sensor subapertures and deformable mirror actuator in cleaning laser beam adaptive optics sysem have been simulated, and controlling gradients directly、Fried mode and Southwell mode of zonal wavefront control have been compared. Finally the result of the wavefront correcting ability and stability of controlling gradients directly is the best in these three wavefront control algorithms is presented.