Efficient Continuous-Wave Diode-Pumped Ho :GTO Laser with a Pump Recycling Scheme
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作者:
Wensheng Zhang
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机构:School of Physics and Electronic Engineering Harbin Normal University,Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education
Wensheng Zhang
Linjun Li
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机构:School of Physics and Electronic Engineering Harbin Normal University,Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education
Linjun Li
Sheng Zhou
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机构:School of Physics and Electronic Engineering Harbin Normal University,Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education
Sheng Zhou
Hong Gao
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机构:School of Physics and Electronic Engineering Harbin Normal University,Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education
Hong Gao
机构:
[1] School of Physics and Electronic Engineering Harbin Normal University,Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education
[2] Harbin University of Science and Technology,The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province
We demonstrate a novel continuous-wave 2.1 μm Ho :GTO laser pumped by a laser diode. Employing a pump recycling scheme and 30% output transmittance, we obtain an output power of 4.76 W and a single oscillating peak of 2068.4 nm with a slope efficiency of 55.3% with respect to the absorbed pump power. In addition, the M2 factor of the Ho :GTO laser is reckoned to be approximately 1.3 at the maximum output power.