In-band pumped Er:YAG ceramic laser with 11 W of output power at 1645 nm |
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| Authors: | X. F. Yang D. Y. Shen T. Zhao H. Chen J. Zhou J. Li H. M. Kou Y. B. Pan |
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| Affiliation: | 1.School of Physical Science and Electronic Engineering,Xuzhou Normal University,Xuzhou,China;2.Department of Optical Science and Engineering,Fudan University,Shanghai,China;3.Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,China |
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| Abstract: | We report on a high power polycrystalline Er:YAG ceramic laser in-band pumped by a cladding-pumped Er, Yb fiber laser wavelength locked at 1532 nm with a volume Bragg grating. Using 1.0 at % Er3+-doped ceramic as the gain medium and an output coupler of 10% transmission, the laser had a threshold pump power of ∼1.5 W and generated 11 W of continuous-wave output at 1645 nm for 23.3 W of incident pump power at 1532 nm, corresponding to a slope efficiency with respect to incident pump power of 51%. |
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