Study on radial polarized grating mirror

Radially polarized light has been a focus in recent years with wide application in particle manipulation, metal cutting and improvement of microscope resolution. It can be generated by an intro-cavity grating mirror in the resonator of a laser. In this article, the influence of gratings properties on the parameters was analyzed by a program which was written by ourselves in the top-etching grating model. And a suitable grating mirror composite structure was designed with considering of the gratings process feasibility.