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12 March 2024 High gain and output power from a novel 17/125 – 56/400 PM Yb-doped tapered double-clad fiber
V. Roy, M. Boivin, B. Labranche, S. Lavoie, S. Deshaies, Q. Martineau, A. Dubé, L. Desbiens, M. Deladurantaye, A. Proulx, Y. Taillon
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Proceedings Volume 12865, Fiber Lasers XXI: Technology and Systems; 1286514 (2024) https://doi.org/10.1117/12.3000373
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
A polarization-maintaining ytterbium-doped tapered double-cladding fiber was made from an aluminophosphosilicate glass preform, with core/cladding diameters of 17/125 μm and 56/400 µm at the small and large ends of the flared section, respectively. Amplifier gain exceeding 50 dB and average output power beyond 200 W were simultaneously achieved after the 1032-nm seed laser, while amplified spontaneous emission was measured ⪅ 1% of total output power. This fiber also yields an optical efficiency close to 90%, near diffraction-limited output with M2 ⪅ 1.2 and polarization extinction ratio ⪆ 18 dB. The newly developed fiber holds the potential to combine two successive amplifier stages in a single device, with foreseen benefits for ultrafast fiber amplifiers and laser harmonics generation.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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V. Roy, M. Boivin, B. Labranche, S. Lavoie, S. Deshaies, Q. Martineau, A. Dubé, L. Desbiens, M. Deladurantaye, A. Proulx, and Y. Taillon "High gain and output power from a novel 17/125 – 56/400 PM Yb-doped tapered double-clad fiber", Proc. SPIE 12865, Fiber Lasers XXI: Technology and Systems, 1286514 (12 March 2024); https://doi.org/10.1117/12.3000373
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KEYWORDS
Fiber amplifiers
Fiber lasers
Transverse mode instability
Laser systems engineering
Oscillators
Ytterbium
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