35/250 ytterbium-doped LMA polarization-maintaining fiber for high average and high peak power amplifiers

V. Roy; L. Desbiens; M. Boivin; P. Grenier; S. Deshaies; Q. Martineau; M. Deladurantaye; A. Proulx; Y. Taillon

doi:10.1117/12.2649079

8 March 2023 35/250 ytterbium-doped LMA polarization-maintaining fiber for high average and high peak power amplifiers

V. Roy, L. Desbiens, M. Boivin, P. Grenier, S. Deshaies, Q. Martineau, M. Deladurantaye, A. Proulx, Y. Taillon

Proceedings Volume 12400, Fiber Lasers XX: Technology and Systems; 1240018 (2023) https://doi.org/10.1117/12.2649079
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

An ytterbium-doped large mode area polarization-maintaining fiber with core/cladding diameters of 35/250 µm was fabricated from modified chemical vapor deposition technique and solution doping process. High cladding absorption and low photodarkening were achieved from aluminophosphosilicate core glass with optimal molar composition. The fiber was tested as a power amplifier using a 1064-nm narrow-linewidth laser oscillator with 34 ps pulse duration and 120 MHz pulse repetition frequency. The slope efficiency was seen to exceed 80% while the average output power was scaled beyond 420 W, before the onset of transverse mode instability. The fabricated fiber also yields near diffraction-limited output, narrow spectral linewidth and high polarization extinction ratio.

Conference Presentation

Citation Download Citation

V. Roy, L. Desbiens, M. Boivin, P. Grenier, S. Deshaies, Q. Martineau, M. Deladurantaye, A. Proulx, and Y. Taillon "35/250 ytterbium-doped LMA polarization-maintaining fiber for high average and high peak power amplifiers", Proc. SPIE 12400, Fiber Lasers XX: Technology and Systems, 1240018 (8 March 2023); https://doi.org/10.1117/12.2649079

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