一种新型的列阵反射镜调整架

 针对组束激光系统主放大器而设计的一种新型的列阵反射镜调整架, 克服了多个调整架结构松散的缺点, 满足了多路激光束之间间距较小的特殊要求;同时采用了柔性铰链机构及步进电机传动中联轴驱动一体机构,使整套系统具有调整精度高、稳定性好等特点。     

Highly efficient Nd:YAG/LBO laser at 473 nm under direct 885-nm diode laser pumping

<正>In diode pumped Nd:YAG lasers,the quantum defect is the most important parameter determining the thermal load of the laser crystal,which can be dramatically reduced by pumping directly into the upper laser level.A compact folded three-mirror cavity with a length of 105 mm is optimized to obtain a highly efficient 473-nm laser.When the absorbed pump power(with 15.8-W incident pump power) at 885 nm into Nd:YAG is 10 W,a continuous-wave 473-nm blue laser as high as 2.34 W is achieved by LBO intra-cavity frequency doubled.The optical-to-optical conversion efficiency is 14.8%.To the best of our knowledge, this is the highest efficiency at 473 nm by an intra-cavity doubled frequency Nd:YAG laser.