A high efficiency Ho:YAlO3 laser pumped by Tm:YLF laser with a Volume Bragg Grating |
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| Authors: | C. Yao X. T. Yang W. H. Li |
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| Affiliation: | 1.College of Power and Energy Engineering,Institue of Marin Engine Electionic Control Technology) Harbin Engineering University,Harbin,China |
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| Abstract: | We report a CW Ho:YAlO3 (Ho:YAP) laser at room temperature pumped by a Tm:YLF laser with a Volume Bragg Grating (VBG) instead of the conventional mirror. The Ho:YAP laser operated at 2117.9 nm with output power 9.12 W. The optical-to-optical conversion efficiency is 60.4% and slope efficiency is 71.2%. The Ho:YAP output wavelength is centered at 2117.9 nm with bandwidth of about 1 nm. The beam quality factor is M 2 ∼ 1.29 measured by the traveling knife-edge method. |
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