| Approximate formulas of temperature and stress distributions and thermal induced effects in a heat capacity slab laser |
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| 作者姓名： | 董玥 祖继锋 侯立群 尹宪华 张涛 顾亚龙 刘志刚 朱健强 |
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| 作者单位： | Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Laboratory of High Power Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800 Graduate School of the Chinese Academy of Sciences，Beijing 100039，Shanghai 201800，Shanghai 201800 Graduate School of the Chinese Academy of Sciences，Beijing 100039，Shanghai 201800，Shanghai 201800 Graduate School of the Chinese Academy of Sciences，Beijing 100039，Shanghai 201800 Graduate School of the Chinese Academy of Sciences，Beijing 100039，Shanghai 201800，Shanghai 201800 |
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| 基金项目： | This work was supported by the project of Chinese Academy of Sciences in 2005. |
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| 摘 要： | 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 ℃ after operating for 10 seconds; the stress and maximum of the temperature difference in the slab are about 30 MPa and 24 ℃, respectively. The thermal induced effects are discussed also.
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