Experimental Study on Wavefront Distortion Correction of 40-Elements Adaptive Optical System Based on SPGD Algorithm

We build an experimental system of adaptive optical (AO) system in a laboratory environment. When the light signal is transmitted through the turbulence chamber, the wavefront distortion is generated under the influence of atmospheric turbulence. We employ a deformable mirror (DM) to correct the wavefront distortion. The AO system adopts stochastic parallel gradient descent (SPGD) algorithm. Experimental results show that AO system is able to well correct the wavefront distortion.