Two Phase Reconstruct Algorithms of High Laser Beam

Two different phase reconstruct algorithms are deseribed in this paper. the principle and the practical formula of the reconstruct algorithms are mainly described. Using a HS plate with hole array instead of HS wavefront sensor, the phase of Starlight II 1012W high power laser is measured. And the results of two reconstructed phases are analyzed. The P-V (peak-valley) and RMS (root-mean-square) values are also compared.