Modeling of diode-pumped cesium vapor laser by combination of computational fluid dynamics and wave-optics
Modeling of diode-pumped cesium vapor laser by combination of computational fluid dynamics and wave-optics
复制标题
结合计算流体动力学和波动光学对二极管泵浦铯蒸气激光器进行建模
DOI：
10.7567/1347-4065/ab649f
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发表时间：
2020
影响因子：
1.5
通讯作者：
F. Wani
中科院分区：
文献类型：
--
作者：
M. Endo;Ryuji Nagaoka;Hiroki Nagaoka;T. Nagai;F. Wani
我们发展了一种用于半导体泵浦的碱激光器的数值模拟方法。我们以前报道过使用简化的气体流动模型，其适应性仅限于强制气体流动DPAL。在本研究中，我们使用了一个不可压缩的三维计算流体动力学(CFD)模型。采用修正的Boussinesq近似来模拟自然对流。模拟结果与热诱导流动问题的可压缩CFD模型的模拟结果吻合较好。结果表明，密封式DPAL与实验结果吻合较好。另一方面，强迫气流DPAL的计算结果与简化气流模型的计算结果一致，证实了简化气体流动模型的有效性。对于密封的DPAL，光束质量与泵浦功率的关系与先前报道的结果一致。
We have developed a numerical simulation method for diode-pumped alkali lasers (DPALs). We previously reported the use of a simplified gas-flow model, whose adaptability was restricted to forced gas-flow DPALs. In the present study, we have employed an incompressible, three-dimensional computational fluid dynamics (CFD) model. The natural convective flow is modeled using a modified Boussinesq approximation. The results of the simulations were found to be in good agreement with those for a compressible CFD model for a heat-induced flow problem. As a result, good agreement with the experimental results was achieved for a sealed DPAL. On the other hand, the results for the forced gas-flow DPAL were the same as those for the simplified gas-flow model, which confirms the validity of the latter model. The dependence of the beam quality on the pump power for the sealed DPAL was consistent with previously reported results.
影响因子：
1.9
作者：
Endo, M;Kawakami, M;Fujioka, T
通讯作者：
Fujioka, T