二极管抽运固体激光器(DPSSL)热管理技术是决定其小型化、插头效率和光束质量等性能的关键因素之一。研究了基于低熔点液态金属镓合金相变材料的二极管抽运激光器(DPL)温控技术。对比实验研究结果表明,与体积更大的风冷肋片散热器相比,相变材料散热器能使激光器在高温55℃环境中正常工作时间从1 min延长到6 min、制冷功耗减小到46%、散热分系统体积减小到53%,并使激光器系统的插头效率由3.02%提高到3.77%。理论计算和有限元仿真模拟再现了液态金属相变过程中温度变化规律,再次表明液态金属相变材料散热器具有功耗低和体积小等优势。为拓展液态金属相变材料在激光器热管理领域的应用奠定了理论和实验基础,具有重要的工程应用价值。 Diode-Pumped Solid-State Laser (DPSSL) thermal management technology is one of the key determinants of performance in terms of miniaturization, plug efficiency, and beam quality. The diode pumped laser (DPL) temperature control technology based on low melting point liquid Gallium alloy phase change materials was studied. The experimental results show that compared with the larger air-cooled finned fin radiator, the phase change material heat sink can prolong the laser operating time from 1 min to 6 min in the high temperature environment of 55 ℃, and reduce the cooling power consumption To 46%, cooling subsystem volume reduced to 53%, and the laser system plug efficiency increased from 3.02% to 3.77%. The theoretical calculation and finite element simulation simulate the temperature variation during the liquid phase transition, which shows that the liquid metal phase change material has the advantages of low power consumption and small size. It has laid a theoretical and experimental foundation for expanding the application of liquid metal phase change materials in the field of laser thermal management and has important engineering application value.