高功率二极管泵浦激光模块技术研究
Study on the technique of high power diode-pumped Nd:YAG laser module
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摘要: 开展了二极管泵浦棒状Nd:YAG激光模块技术研究，在数值模拟激光模块增益分布的基础上对耦合结构进行了优化，初步研制出了高增益振荡级激光模块及高储能放大激光模块。实验结果表明，振荡级激光模块泵浦均匀且增益较高，TEM00模输出情况下单脉冲能量为11.8mJ, 光-光效率为 15%；放大模块在500Hz重复频率下获得了单脉冲400mJ的储能。Abstract: This paper investigates, theoretically and experimentally, the elements which influence the gain distribution of laser medium. A high gain laser module and a high energy storage laser module have been manufactured. The experiment results approved that the high gain laser module was pumped uniformly and a TEM00 output energy of 11.8mJ was achieved at a light-light efficiency of 15％. In the high energy storage laser module, a 6mm diameter Nd:YAG rod which is 100mm long was pumped by nine-diode arrays (the peak pump-power is 6 500kW) . Numerical calculation was done to optimize the distance between diode and Nd:YAG. The experiment result approved that the gain coefficient of this module is 0.3/cm, and the storage power is 400mJ per pulse．
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Key words:
- laser diode /
- laser module /
- pumping /
- gain distribution /
- energy storage
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