【摘要】 针对大功率激光二极管(LD)的冷却需求,基于沸腾-空化耦合效应,以及场协同理论,研制了一种微通道两相冲击强化相变热沉,封装腔长1.5 mm的LD线阵。实验测试了连续功率LD输出0~100 W时的电-光转换效率以及电流-输出功率等特性,冷却工质采用R134a,磁驱齿轮泵电机转速23 Hz时热沉热阻为0.211℃/W。结果显示微通道相变热沉具有良好的取热能力,能够满足大功率LD的散热要求。与改进前的热沉相比,基于场协同理论优化了的两相冲击热沉,热阻明显下降。更多还原

【Abstract】 A micro-channel phase-change heat sink has been developed for cooling high power continual laser diode(LD) based on coupling of boiling-cavitation in micro-channel and field synergy principle.The electron-optic conversion efficiency,output wavelength and the relation between input current and output power are measured experimentally when LD output power changes from 0 to 100 W.The cooling refrigerant is R134a.The thermal resistance of heat sink is measured as 0.211 ℃/W when the magnetic drive gear pump is operated at 23 r/s motor speed.Comparing with the previous heat sink,the thermal resistance of the micro-channel phase-change heat sink based on field synergy principle decreases significantly.更多还原