Simulation and experimental investigation on the wavefront correction performance of a dual magnetic connection deformable mirror under high-power laser irradiation

Deformable mirrors (DMs) are widely used in high-power laser systems to improve the output beam quality. However, under irradiation, heat accumulates on DM mirror surface and results induced distortions (LID), which will degrade wavefront correction performance of DM. In order suppress negative impact LID DM’s performance, we introduce dual magnetic connection (DDM), base connected by two-layer magnets. Configuration DDM is presented. The simulation established analyze characteristics as well DDM. An experiment investigate practical conditions. Simulation indicate that could effectively maintain good capability.