按照论文要求润色下面这段话：由于陶瓷反射器的直径越短晶体的吸收效率越高15因此在保证晶体冷却效果的前提下我们将反射器的内径缩短至最小的8mm同时玻璃管的内径设计为6mm。这样LD发光面到晶体轴中心的距离仅为6mm能够在晶体棒中获得较高的抽运光功率密度有利于实现高功率激光输出。

According to previous studies, a shorter diameter of the ceramic reflector results in a higher absorption efficiency of the crystal [15]. Therefore, while ensuring the cooling effect of the crystal, we have minimized the inner diameter of the reflector to 8mm and designed the inner diameter of the glass tube to be 6mm. As a result, the distance between the LD emitting surface and the crystal axis center is only 6mm, which allows for a higher pumping power density in the crystal rod, facilitating high-power laser output