Going beyond the Beam quality limit of Spectral Beam Combining
演讲课题：Going beyond the Beam quality limit of Spectral Beam Combining
Spectral beam combining (SBC) is a simple and efficient way to realize power scaling and maintain the beam quality as that of single emitter, which has achieved 8 kW direct diode laser and multi- kWfiber lasers.Although SBC almost demonstrated the best beam quality for incoherent combining of lasers, the beam quality limit of SBC is still that of single emitter. In this talk, I will introduceour works on how to go beyond the beam quality limit of SBC. The off-axis SBC approaches based on the selective feedback and small angle V-shaped cavity will be given. The influence factors for the efficiency of SBC will be presented. The developmenttrend and the competition of direct diode lasers with the solid state lasers and fiber lasersarealso discussed.