Annular beam nonlinear beam shaping method based on aspherical mirror

This paper presents a method of annular beam nonlinear beam shaping by aspherical mirrors. The beam shaping system which contains two high-order aspherical mirrors can adjust the obscuration ratio and intensity distribution easily on the premise that there is almost no power loss. This method can realize mutual transformations come true between solid beams and hollow beams. Experimental results show that the method provides a good way for nonlinear beam shaping, and the optical path by this method agree well with theoretical analysis result.