Numerical analysis of an end-pumped Yb:YAG thin disk laser with variation of a fractional thermal load.
Numerical analysis of an end-pumped Yb:YAG thin disk laser with variation of a fractional thermal load.
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DOI：
10.1364/ao.53.004349
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发表时间：
2014-07
期刊：
影响因子：
1.9
通讯作者：
Guangzhi Zhu;Xiao Zhu;Y. Huang;Hailin Wang;Changhong Zhu
中科院分区：
文献类型：
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作者：
Guangzhi Zhu;Xiao Zhu;Y. Huang;Hailin Wang;Changhong Zhu
建立了描述端泵浦Yb:YAG薄盘激光器动态特性的解析模型。在该模型中，考虑了分数热负荷对薄片状晶体温度和腔内激光强度的依赖，计算了包括非辐射弛豫过程在内的速率方程。在激光或非激光条件下，对分数热负荷进行了分析，或者可以清楚地评估。采用数值迭代法得到了不同辐射量子效率下薄片状晶体的稳定温度和分数热负荷。此外，还讨论了激光输出强度与泵浦强度、耦合器反射率、辐射量子效率和薄片状晶体温度的关系。
An analytical model is developed to describe the dynamic behavior of an end-pumped Yb:YAG thin disk laser. Within the model, the rate equations, including the nonradiative relaxation process, are calculated taking into account the dependence of the fractional thermal load on the temperature of the thin disk crystal and intracavity laser intensity. The fractional thermal load is analyzed, or can be evaluated clearly, under lasing or nonlasing conditions. The stable temperature and fractional thermal load in a thin disk crystal for different radiative quantum efficiencies are obtained using the numerical iterative method. Furthermore, the dependence of the laser output intensity on variables such as pumping intensity, coupler reflectivity, radiative quantum efficiency, and the temperature of thin disk crystal is discussed.