12 kW占空比为15%的二极管泵浦激光模块
12 kW 15% duty cycle diode pumped laser module
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摘要: 开展了高储能、高占空比二极管泵浦激光模块的研究工作，针对影响激光介质增益分布的相关因素进行了理论和实验研究，研制出了高占空比、高储能二极管泵浦激光模块。该模块采用了144个激光二极管对直径为Φ8 mm的Nd：YAG进行泵浦， 获得了均匀的增益分布和单脉冲能量700 mJ的储能。在该研究中，数值模拟了激光介质的增益分布，确定了激光模块的耦合结构，针对二极管线阵的高功率排热需求，研制了高效率微通道冷却结构，并完成了激光模块内部结构的模块化设计和激光模块性能参数的测试。Abstract: This paper theoretically and experimentally investigated the elements which influence the gain distribution of laser medium. A high energy storage laser module was manufactured. In this module an 8 mm diameter Nd:YAG rod which was 120 mm long was pumped by twelve diodes-arrays (the peak pump-power was 12 kW). Each array consisted of twelve diodes. Numerical calculation was done to optimize the coupling structure. In order to satisfy the condition of reducing heat, a microchannel cooling structure was adopted. The experiment result shows that the gain coefficient of this module is 0.186/cm and the storage power is about 700 mJ per pulse．
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Key words:
- diode laser /
- laser module /
- pump /
- gain distribution /
- energy storage
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