本研究设计了一种针对高功率半导体激光器散热问题的干冰微粒喷雾冷却散热器,并利用FLUENT软件对其热流场进行了模拟仿真。得出:入口带有多出口喷嘴的散热器,冷流体在针柱的扰动后对高功率半导体激光器的散热效果最好。干冰流速为0.5 m/s,稳定后的温度为24.79 ℃。实验测试与模拟仿真结果对比,得出最大相对误差分别为8.3%、8.8%。此外,与微通道水冷相比,干冰冷却降温的激光器整体温度低,电光转换效率高,沿垂直条宽方向温度分布均匀,热应力减小,“smile”效应减弱。研究结果为开发高功率水平阵列半导体激光器干冰冷却打下基础。

This study proposes a dry ice particle spray cooling radiator for addressing the thermal management issues in high power semiconductor laser.The thermal flow field of the radiator is simulated using FLUENT software.The results indicate that the heat dissipation effect is optimal when the radiator has multi-outlet nozzles in the inlet and the cold fluid undergoes disturbances caused by the needle.With a dry ice flow velocity of 0.5 m/s,the stabilized temperature is measured to be 24.79 ℃.A comparison between experimental testing and simulation result reveals a maximum relative error of 8.3% and 8.8%,respectively.Moreover,in comparison to microchannel water cooling,dry ice cooling exhibits lower overall temperature of laser,higher electro-optical conversion efficiency,uniform temperature distribution along the width of the vertical bars,and reduced thermal stress-induced "smile" effects.These findings lay the foundation for the development of high power horizontal array semiconductor lasers with dry ice cooling.

TN40TK172

天津市研究生科研创新项目(2022SKY326) 资助项目