Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 127, Issue 7, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-021-07652-3
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Funding
- National Key R&D Program of China [2017YFB0405100, 2017YFB0405200]
- National Natural Science Foundation of China [61675192, 61605195, 61308032, 61622507]
- Key Deployment Program of Chinese Academy of Sciences [KGZD-SW-T01-2]
- Chinese Academy of Sciences Scientific Equipment Research Project [YJKYYQ20170003]
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A simple model was proposed to calculate the average outputs for fiber-coupled green laser-diode pump beam, and a direct-pumping continuous-wave Ti:Sapphire laser with green diodes achieved an optimized output. This work demonstrated the highest output reported so far with high optical/optical conversion efficiency and slope efficiency.
For fiber-coupled green laser-diode pump beam, a simple model was proposed to calculate the average outputs. Then we presented a direct-pumping continuous-wave Ti:Sapphire laser producing an optimized output of 3.8-W with green diodes. It was the highest output of this kind reported so far corresponding to an optical/optical conversion efficiency of 11.5% and a high slope efficiency of 15.7% at 810 nm. A highest power of 1.41-W was also obtained with the single-sided pumping corresponding to a good slope efficiency of 14.3%. High-power green diodes realized the lowest threshold pumping intensity of similar to 16.7 x 10(3) W/cm(2) under hundred-mu m-level beam diameter size. This work would benefit the design for the direct-pumping Ti:Sapphire laser as a guide.
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