THE ELIMINATION AND REGULATION OF ASTIGMATISM IN SPHERICAL MIRROR FOLDED CAVITIES
球面镜折迭腔中光模象散的调整与消除

By selecting appropriate cavity configurations, the astigmatism of optical mode in spherical mirror folded cavities can be partially eliminated and regulated. The codi-tion of anastigmatism elimination for output branch of spherical mirror folded cavities is calculated by means of the transformation circle diagram.