板条固体激光器的一种热物理模型
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摘要
为了获得固体激光器的高功率、高光束质量和高效率,采用理论分析的方法,建立了板条激光介质温度分布和冷却速率等热物理参量的模型,并以灯抽运钕玻璃板条固体激光器为例,进行了数值计算。结果表明,2维模型可以更精确地说明板条固体激光器的温度分布和冷却速率等热物理特征。该研究对高功率板条激光介质的设计具有一定的指导意义。
In order to obtain high power, high beam quality and high efficiency of solid-state lasers, by means of theoretical analysis, the models of temperature distribution and cooling rate of slab laser mediums were established. A lamp-pumped Nd∶glass slab solid-state laser was taken as an example for numerical calculation. The results show that, the temperature distribution and cooling rate of slab solid-state lasers can be more accurately described by the 2-D model. This research has certain guiding significance for the design of high power slab laser mediums.
In order to obtain high power, high beam quality and high efficiency of solid-state lasers, by means of theoretical analysis, the models of temperature distribution and cooling rate of slab laser mediums were established. A lamp-pumped Nd∶glass slab solid-state laser was taken as an example for numerical calculation. The results show that, the temperature distribution and cooling rate of slab solid-state lasers can be more accurately described by the 2-D model. This research has certain guiding significance for the design of high power slab laser mediums.
引文
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[2] ZHOU Sh H.The thermal-management in solid-state lasers[J].Chin-ese Journal of Quantum Electronics,2005,22(4):497-509(in Chin-ese).
[3] HAN K.The progress of solid-state lasers[J].Laser Journal,1983,4(2):76-80(in Chinese).
[4] FANG A P,LOU Q H,DONG J X,et al.Experiment study on the temperature characteristics of LD pumped Nd∶YAG laser slab[J].Chinese Journal of Lasers,2002,29(s1):96-98(in Chinese).
[5] EGGLESTON J M,KANE T J,KUHN K,et al.The slab geometry laser.Ⅰ—Theory[J].IEEE Journal of Quantum Electronics,1984,20(3):289-301.
[6] KANE T,ECKARDT R,BYER R.Reduced thermal focusing and birefringence in zig-zag slab geometry crystalline lasers[J].IEEE Journal of Quantum Electronics,2003,19(9):1351-1354.
[7] LIU Q,MENG J Q,ZU J F,et al.high repetition frequency narrow pulse electro-optically Q-switched laser for space applications[J].Chinese Journal of Lasers,2017,44(6):0601005(in Chinese).
[8] ZHAO G,LI J,PENG X J,et al.Compact repetition diode-pumped slab lasers without thermoelectric coolers[J].Laser Technology,2016,40(5):625-628(in Chinese).
[9] CAO Y Zh.Heat transfer [M].Beijing:Beijing Aviation and Space University Press,2001:1-21(in Chinese).
[10] LIANG K M.The method of mathematic and physics [M].3rd ed.Beijing:Higher Education Press,1998:253-282 (in Chinese).
[11] HE Sh B,CHEN L,CHEN Y B,et al.Thermal effect of N41 Nd∶glass slab with 400mm aperture[J].Chinese Journal of Lasers,2017,44(5):0501007(in Chinese).
[12] YANG Sh M,TAO W Q.Heat transfer [M].4th ed.Beijing:Higher Education Press,2006:112-161(in Chinese).
[13] KOECHNER W.Solid-state laser engineering[M].Beijing:Science Press,2002:171-207(in Chinese).
[14] GU Y H.The heat-exchange used in cooling 100W Nd∶YAG laser[J].Laser Technology,1989,13(6):44-48(in Chinese).
[15] WANG Zh,LIU Y,LIU L,et al.Laser-diode side-pumped Nd∶YAG thin slab laser based on MOPA[J].Laser and Infrared,2015,45(4):364-368(in Chinese).
[16] ZHANG K,YU D H,HE Y,et al.Analysis on cooling performance of compact mid-infrared solid-state laser[J].Chinese Journal of Lasers,2017,44(3):0301002(in Chinese).
[17] HOU J,WANG H X,LIAO D F,et al.Manufacturing process of high-power laser crystals[J].High Power Laser and Particle Beams,2014,26(7):95-99(in Chinese).
[18] KANMENSKI A A.Laser crystal[M].Beijing:Science Press,1981:66-67(in Chinese).
[19] Lü B D.The laser optics[M].Chengdu:Sichuan University Press,1992:191-216(in Chinese).
[20] ZHOU Y H,SUN B H.Laser physics[M].Beijing:Beijing University Press,1991:68-75(in Chinese).