In-band pumped highly efficient Ho:YAG ceramic laser with 21 W output power at 2097 nm
2011; Optica Publishing Group; Volume: 36; Issue: 9 Linguagem: Inglês
10.1364/ol.36.001575
ISSN1539-4794
AutoresHao Chen, Deyuan Shen, Jian Zhang, Hao Yang, Dingyuan Tang, Ting Zhao, Xiaofang Yang,
Tópico(s)Photorefractive and Nonlinear Optics
ResumoWe 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%.
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