Method of wave-front measurement and correction for entire beam path of ICF system

A new method to measure the aberrations of entire beam path is presented. An additional CCD in far-field for detecting focal spot is located. Different deformable mirror’s surface shapes are generated which can bring additional aberrations to ICF optical system and create their corresponding focal spots. Then additional aberrations and different intensity signal of focal spots can be recorded simultaneously by Hartmann-Shack sensor and CCD respectively. An amendatory phase-retrieval method is introduced, which can reconstruct the aberrations of entire beam path from different pairs of additional aberrations and their corresponding focal spots intensity. The simulative results show that the adaptive optics system can correct the aberrations of entire beam path of ICF successfully based on