【摘要】 报道了高功率光纤合束器热阻系数的研究。实验研究了高功率光纤合束器热阻系数的测量方法,分别在被动制冷、主动制冷和消除背向反射光条件下,测量了加拿大ITF公司系列高功率光纤合束器的热阻系数,分别为0.32℃/W,0.15℃/W,0.29℃/W;比较被动制冷和主动制冷两种条件下光纤合束器热阻系数的差异,表明主动制冷可以明显降低光纤合束器热阻系数;研究了光纤合束器背向反射光对热阻系数的影响,发现消除背向反射光有利于降低热阻系数。研究结果对高功率光纤激光器结构设计具有重要意义。更多还原

【Abstract】 The research on thermal resistivity of high power fiber combiner is reported. The measurement method of thermal resistivity is studied. The thermal resistivity of high power fiber combiner of the Canadian ITF company is 0.32 ℃ / W,0. 15 ℃ / W,0. 29 ℃ / W respectively under the conditions of passive cooling,active cooling and without the backward reflected light. Comparing the measured results between passive cooling and active cooling,it will be founded that the thermal resistivity under active cooling is lower. When the backward reflected light is eliminated,the thermal resistivity will be decreased also. The results are very important for the design of high power fiber laser.更多还原