论文部分内容阅读
针对高功率二极管重复率抽运的V型非稳腔Yb3+∶YAG激光头,提出了利用金刚石窗口冷却和直接水冷相结合的复合冷却设计.在YAG片的抽运面进行直接水冷,同时在激光提取面利用金刚石窗口冷却介质.金刚石优异的导热性能不仅能够有效地冷却激光介质,还能消除横向的温度梯度,解决了高功率激光器冷却和高功率抽运的矛盾.模拟结果表明对掺杂10at%厚度为1.6mm的Yb3+∶YAG片在抽运功率密度为20kW/cm2,重复频率为10Hz的条件下,要将最高温度控制在可接受的范围内(比如320K),周围冷却水的对流换热系数约为4000W/m2K.
For the high-power diode repetition rate pumping V-type unstable cavity Yb3 +: YAG laser head, the use of diamond window cooling and direct cooling combined cooling composite design in YAG film pumping surface direct water cooling, while the laser Extraction surface using diamond window cooling medium.Excellent thermal conductivity of diamond not only can effectively cool the laser medium, but also to eliminate the lateral temperature gradient, to solve the high power laser cooling and high power pumping contradictions.The simulation results show that the doped 10at % Thickness of 1.6mm Yb3 +: YAG piece in the pumping power density of 20kW / cm2, the repetition frequency of 10Hz conditions, the maximum temperature should be controlled within an acceptable range (such as 320K), the surrounding cooling water convection Thermal coefficient of about 4000W / m2K.