在带内泵浦的高效 Ho:YAG 陶瓷激光器中，2097nm 处获得 21W 的输出功率。

In-band pumped highly efficient Ho:YAG ceramic laser with 21 W output power at 2097 nm.

机构信息

Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China.

出版信息

Opt Lett. 2011 May 1;36(9):1575-7. doi: 10.1364/OL.36.001575.

DOI:10.1364/OL.36.001575

PMID:21540932

Abstract

We report on the high-power and high-efficiency operation of a polycrystalline Ho:YAG ceramic laser in-band pumped by a Tm fiber laser at ~1907 nm. Lasing characteristics of a 1.5 at.% and a 2.0 at.% Ho³⁺-doped YAG ceramic were investigated and compared. Using an output coupler of 6% transmission, over 21.4 W of cw output power at 2097 nm has been generated with the 1.5 at.% doped Ho:YAG ceramic under 35 W of incident pump power, corresponding to an average slope efficiency with respect to the incident pump power of 63.6% and an optical-to-optical conversion efficiency of 61.1%.

摘要

我们报告了一种多晶 Ho:YAG 陶瓷激光器在 ~1907nm 的 Tm 光纤激光器带内泵浦下的高功率、高效率运行。研究并比较了 1.5at.%和 2.0at.% Ho³⁺掺杂 YAG 陶瓷的激光特性。使用 6%透过率的输出耦合器，在 35W 的入射泵浦功率下，1.5at.%掺杂 Ho:YAG 陶瓷产生了超过 21.4W 的 2097nm 连续波输出功率，对应于入射泵浦功率的平均斜率效率为 63.6%，光光转换效率为 61.1%。