Journal
OPTICS LETTERS
Volume 37, Issue 17, Pages 3558-3560Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.003558
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Funding
- National Natural Science Foundation of China [60878011, 61078008]
- Program for New Century Excellent Talents in University [NCET-10-0067]
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An efficient 2 mu m in-band pumped Ho:YAG laser was demonstrated. The resonator involves two Ho:YAG crystals, each of which was dual-end-pumped by two orthogonally polarized diode-pumped Tm:YLF lasers. The maximum continuous wave output power of 103 W was achieved, corresponding to a slope efficiency of 67.8% with respect to the incident pump power and an optical-to-optical conversion efficiency of 63.5%. Under Q-switched mode, we obtained 101 W laser output at 30 kHz, corresponding to a slope efficiency of 66.2%. The beam quality or M-2 factor was found to be less than 2. (c) 2012 Optical Society of America
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