Closed loop wavefront correction using deformablemirror for laser beam

摘要

The laser beam with wavefront distortion can't be focused. The wavefront distortion of ultra-high peak power laser is increased by the thermal effect. For compensation of the wavefront of such a laser beam, we developed a closed loop wavefront control system consisting of a Shack-Haltmann type wavefront sensor and a deformable mirror. As a result of the experiments, the root mean square of the wavefront distortion was reduced to less than 1/10 of the original.