Improvement of single pulse energy and laser efficiency by co-doping Cr3+ ions into the Er:YAG crystal

We demonstrated an improvement of laser performance by co-doping Cr3+ into Er:YAG crystal grown by the Czochralski method. A maximum single pulse energy of 1.52 J was obtained on the Cr,Er:YAG crystal operated at 5 Hz and 2.94 μm, corresponding to the slope efficiency and electrical-to-optical efficiency of 1.80% and 1.28%.

本研究通过切克劳斯基法（Czochralski method）生长铒掺杂钇铝石榴石（Er:YAG）晶体，并向其中共掺杂三价铬离子（Cr³+），实现了激光性能的优化提升。在工作频率5 Hz、输出波长2.94 μm的工况下，该铬铒共掺杂钇铝石榴石（Cr,Er:YAG）晶体的最大单脉冲能量可达1.52 J，对应的斜率效率与电光转换效率分别为1.80%与1.28%。