中红外2μm Tm:YLF激光热效应分析

发布时间：2018-03-17 16:03

  本文选题：热效应　切入点：稳态热模型　出处：《激光与红外》2017年07期 　论文类型：期刊论文

【摘要】：基于2μm Tm:YLF激光器的实际工作条件建立了各向异性激光晶体的稳态热模型,通过解析法得到了Tm晶体内温度场分布的解析表达式;模拟并分析了泵浦功率、光斑半径、晶体端面尺寸对Tm晶体内温度场分布的影响。最终得到了在不同条件下晶体内部温度分布,结果表明:掺杂浓度的增加加剧了晶体的温升,增加了晶体热畸变不均匀性,产生更明显的热效应;而晶体长度的适度增加降低了晶体的温升,缓解了晶体热畸变不均匀性,削弱了晶体的热效应。所得结论可以为LD抽运Tm:YLF激光器的腔型及散热系统设计提供理论支持。
[Abstract]:Based on the actual working conditions of 2 渭 m Tm:YLF laser, the steady state thermal model of anisotropic laser crystal is established, the analytical expression of temperature field in TM crystal is obtained by analytical method, and the pump power, spot radius and pump power are simulated and analyzed. The effect of crystal end dimension on the temperature field distribution in TM crystal is obtained. The results show that the increase of doping concentration intensifies the temperature rise of the crystal and increases the inhomogeneity of the thermal distortion of the crystal. A more obvious thermal effect is produced, and a moderate increase in the length of the crystal reduces the temperature rise of the crystal and alleviates the inhomogeneity of the thermal distortion of the crystal. The results can provide theoretical support for the design of cavity and heat dissipation system of LD pumped Tm:YLF laser.
【作者单位】： 广东东软学院计算机科学与技术系;
【基金】：国家自然科学基金项目(No.61363047) 广东省佛山市科技创新项目(No.2016AG100382)资助
【分类号】：TN248
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本文编号：1625454