Xu Peng, Yang Suhui, Zhao Changming, Guan Zhu, Wang Huaxin, Zhang Yichen, Zhang Haiyang, He Tao
Appl Opt. 2014 Jun 20;53(18):3941-4. doi: 10.1364/AO.53.003941.
We test the performances of a Nd:YAG rod with a grooved sidewall in two solar pumped laser setups. In both cases, a Fresnel lens with a surface of 1.03 m2 is used as the primary solar light concentrator. In the first setup, a ceramic conical cavity is used as the secondary concentrator. Maximum output power of 20.3 W is obtained, corresponding to a slope efficiency of laser output power with respect to focused solar power of 8.34%. In the second setup, a water tube lens is added in a copper conical cavity to further increase the solar energy concentration; from this setup, 27 W output power is obtained, the slope efficiency of laser output power with respect to focused solar power is 9%. In both cases, the performances of the grooved rod are compared with those of an unpolished rod. The efficiency and the beam quality with the grooved rod are superior to those of the unpolished rod.
我们在两种太阳能泵浦激光装置中测试了具有带槽侧壁的钕钇铝石榴石棒的性能。在这两种情况下，均使用表面积为1.03平方米的菲涅耳透镜作为初级太阳光聚光器。在第一种装置中，使用陶瓷锥形腔作为次级聚光器。获得了20.3瓦的最大输出功率，对应于激光输出功率相对于聚焦太阳能功率的斜率效率为8.34%。在第二种装置中，在铜锥形腔中添加了水管透镜以进一步提高太阳能集中度；从该装置中获得了27瓦的输出功率，激光输出功率相对于聚焦太阳能功率的斜率效率为9%。在这两种情况下，均将带槽棒的性能与未抛光棒的性能进行了比较。带槽棒的效率和光束质量优于未抛光棒。
