High Absorption Low NA Step Index Large-Mode-Area Fiber for High Power Ultrafast Lasers

R. Sidharthan; K. J. Lim; S. H. Lim; H. Li; Y. Zhou; J. Ji; Y. M. Seng; S. L. Chua; S. Yoo

doi:10.1364/CLEO_AT.2019.JW2A.89

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2019),
paper JW2A.89
•https://doi.org/10.1364/CLEO_AT.2019.JW2A.89

High Absorption Low NA Step Index Large-Mode-Area Fiber for High Power Ultrafast Lasers

R. Sidharthan, K. J. Lim, S. H. Lim, H. Li, Y. Zhou, J. Ji, Y. M. Seng, S. L. Chua, and S. Yoo

CLEO: Applications and Technology 2019

San Jose, California United States
5–10 May 2019
ISBN: 978-1-943580-57-6

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Poster Session II (JW2A)

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R. Sidharthan, K. J. Lim, S. H. Lim, H. Li, Y. Zhou, J. Ji, Y. M. Seng, S. L. Chua, and S. Yoo, "High Absorption Low NA Step Index Large-Mode-Area Fiber for High Power Ultrafast Lasers," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2019), paper JW2A.89.

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Abstract

We report fabrication of >20dB/m cladding absorption step-index LMA fiber with low core NA(<0.07) suitable for ultra-fast fiber lasers. Above 58W output power with a slope efficiency of ~80% was demonstrated in only 0.5m fiber.

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