The output beam of a laser usually has its typical intensity distribution, whichoften affects the energy efficiency in practical application. To improve the utilizationefficiency of the laser beam, it is required to transform the output laser intensitydistribution into a specific intensity distribution. In this paper, numerical simulationand experimental research of beam shaping are carried out by using pure phase liquidcrystal spatial light modulator(LC-SLM), which are based on physical optics method.The m...