论文部分内容阅读
无机液体激光器实现高平均功率运行的最大障碍是增益介质的热效应,采用流动冷却方式可以有效消除热沉积的累积效应,但会对增益介质的温度分布产生影响。基于流体的能量方程建立了无机液体激光器增益介质的温度分布模型,并针对二极管双侧横向泵浦的实际工作情况对模型进行了简化,计算了工作阶段增益介质的温度分布,并对影响温度分布的吸收系数和流速选择进行了讨论。计算结果表明,在单侧泵浦强度为1 kW/cm~2时,液体流速为12 m/s 可以控制增益介质的最大温升小于0.2K。
Inorganic liquid laser to achieve high average power operation of the biggest obstacle is the gain medium thermal effect, the use of flow cooling can effectively eliminate the cumulative effect of heat deposition, but will have an impact on the temperature distribution of the gain medium. Based on the energy equation of the fluid, the temperature distribution model of the gain medium for the liquid-crystal laser was established. The model was simplified for the actual operation of the bilateral lateral pump. The temperature distribution of the gain medium in the working stage was calculated. The absorption coefficient and flow rate options are discussed. The calculated results show that the maximum temperature rise of the gain medium can be controlled to be less than 0.2K at a liquid flow rate of 12 m / s at a unidirectional pump strength of 1 kW / cm ~ 2.