Optimized Design for High-Power Laser Output: Minimizing Reflector Diameter for Enhanced Crystal Absorption

Due to the fact that the smaller the inner diameter of the ceramic reflector, the higher the absorption efficiency of the crystal [14], we designed the inner diameter of the reflector to be a minimum of 8 mm and the inner diameter of the glass tube to be 6 mm, while ensuring the cooling effect of the crystal. At this point, the distance from the LD emitting surface to the center of the crystal axis is only 6 mm, which enables a higher pumping light power density in the crystal rod, and is conducive to achieving high-power laser output.