VAD technology for laser fibers

Jaesun Kim; Hyungsu Cho; Gaye Park; Jaewan Han; Junho Lee; Daeyoung Kim; Chanho Hwang; Dae Seung Moon; Changhyun Jung; Chihwan Ouh

doi:10.1117/12.2509614

7 March 2019 VAD technology for laser fibers

Jaesun Kim, Hyungsu Cho, Gaye Park, Jaewan Han, Junho Lee, Daeyoung Kim, Chanho Hwang, Dae Seung Moon, Changhyun Jung, Chihwan Ouh

Author Affiliations +

Proceedings Volume 10897, Fiber Lasers XVI: Technology and Systems; 108970G (2019) https://doi.org/10.1117/12.2509614
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

VAD technology has been proposed for laser fiber fabrication to improve its productivity and reproducibility. Rare-earth ion, Yb³⁺ has been incorporated with Ce³⁺ and Al³⁺ by the conventional solution doping process. In order to obtain a transparent Yb-doped core rod, the pre-sintering and consolidation process for the large volume of silica soot deposited by VAD has been significantly investigated. In addition, 20/400μm Yb-doped fiber with octagonal cladding has been fabricated. The cladding absorption was 0.44dB/m at 915nm, which corresponds to ~ 0.2mol% of Yb concentration and the slope efficiency with respect to absorbed pump power at 976nm was 66.7%.

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Citation Download Citation

Jaesun Kim, Hyungsu Cho, Gaye Park, Jaewan Han, Junho Lee, Daeyoung Kim, Chanho Hwang, Dae Seung Moon, Changhyun Jung, and Chihwan Ouh "VAD technology for laser fibers", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108970G (7 March 2019); https://doi.org/10.1117/12.2509614

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