Approximate formulas of temperature and stress distributions and thermal induced effects in a heat capacity slab laser
Approximate formulas of temperature and stress distributions and thermal induced effects in a heat capacity slab laser
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发表时间：
2006-06
影响因子：
3.5
通讯作者：
Yue Dong;Jifeng Zu;L. Hou;X. Yin;Tao Zhang;Y. Gu;Zhigang Liu;Jianqiang Zhu
中科院分区：
文献类型：
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作者：
Yue Dong;Jifeng Zu;L. Hou;X. Yin;Tao Zhang;Y. Gu;Zhigang Liu;Jianqiang Zhu
通过求解热扩散方程，得到了两侧泵浦热容激光器板片瞬态温度和应力分布的近似公式。基于该公式，对平均输出功率为5 kW的双面对称激光二极管阵列（LDA）泵浦Nd:GGG板条激光器泵浦周期内的温度和应力分布进行了数值模拟。结果表明，运行10秒后，板坯内的温度平均升高70摄氏度以上；板坯内的应力和最大温差分别约为30 MPa和24摄氏度。还讨论了热诱导效应。
Approximate formulas of transient temperature and stress distributions in the slab of a two-side pumped heat capacity laser are attained by solving the heat diffusion equation. Based on the formulas, the distributions of temperature and stress during the pump period of a two-sided symmetrically laser diode array (LDA) pumped Nd:GGG slab laser with 5-kW average output power are numerically simulated. The results show that the temperature in the slab will averagely increase by more than 70 Celsius degrees after operating for 10 seconds; the stress and maximum of the temperature difference in the slab are about 30 MPa and 24 Celsius degrees, respectively. The thermal induced effects are discussed also.