Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/137088
Title: | 115 W fiber laser with an all solid-structure and a large-mode-area multicore fiber | Authors: | Ji, Junhua Raghuraman, Sidharthan Huang, Xiaosheng Zang, Jichao Ho, Daryl Zhou, Yanyan Benudiz, Yehuda Ami, Udi Ben Ishaaya, Amiel A. Yoo, Seongwoo |
Keywords: | Engineering::Electrical and electronic engineering | Issue Date: | 2018 | Source: | Ji, J., Raghuraman, S., Huang, X., Zang, J., Ho, D., Zhou, Y., . . ., Yoo, S. (2018). 115 W fiber laser with an all solid-structure and a large-mode-area multicore fiber. Optics Letters, 43(14), 3369-3372. doi:10.1364/OL.43.003369 | Journal: | Optics letters | Abstract: | We investigate mode-area scaling by means of supermode operation in an all-solid multicore fiber. To obtain a large-mode area (LMA), we designed and fabricated an active double-clad multicore fiber, where each ytterbium-doped core is 19 μm in diameter and has a numerical aperture of 0.067, comparable to the core of the largest available commercial LMA fibers. The six large cores are stacked tightly in a ring structure to enable phase locking of the core fields and supermode operation. The fiber laser performance was investigated in a linear laser cavity with an external Talbot resonator for mode selection. The highest output power achieved was 115 W with an overall 61% slope efficiency corresponding to the pump power. The measured M2 was 1.43 for the central lobe with nearly 70% of the total power. | URI: | https://hdl.handle.net/10356/137088 | ISSN: | 0146-9592 | DOI: | 10.1364/OL.43.003369 | Rights: | © 2018 Optical Society of America. All rights reserved. This paper was published in Optics Letters and is made available with permission of Optical Society of America. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | EEE Journal Articles |
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