Solid state laser with longitudinal cooling

摘要: An optically-pumped laser comprises a cavity, solid-state gain medium and an optically transparent heat sink (OTH) situated within the cavity. The OTH are thermally coupled at least one of has etalon structure thereby improving efficiency. advantageously provides effective transfer permits higher average power operation, particularly for thin materials. A metallic may be to improve transfer. In some embodiments, is end-pumped with optical pump radiation through OTH. second intracavity opposite first provide longitudinal in both directions. frequency-converted provided by using nonlinear material longitudinally cooled on each end OTHs, which structure. converted beams output from cavity along separate paths manner that prevents interference between two beams.