| 摘要 |
The present invention relates to a surgical laser system for delivering a beam of radiant energy through a remote aperture, including a rod of solid lasing medium, comprising means for reducing beam divergence. The invention further relates to a method for generating a beam of radiant energy having an optical path through a remote aperture, including a rod of solid lasing medium and an optical cavity, a method for reducing the divergence of the beam comprising at least one procedure selected from the group consisting of shaping at least one end of the rod to have negative curvature; configuring the optical cavity as a positive-branch unstable resonator; and providing a beam expansion telescope in the optical path of the beam. <IMAGE> |
