1200 W monolithic all-fiber laser with fs-written fiber Bragg gratings and side-pumping coupler

Hao Li; Hongye Li; Zhixian Li; Xin Tian; Meng Wang; Binyu Rao; Baiyi Wu; Xiaoming Xi; Zhilun Chen; Zefeng Wang; Jinbao Wang

doi:10.1117/12.2654758

15 December 2022 1200 W monolithic all-fiber laser with fs-written fiber Bragg gratings and side-pumping coupler

Hao Li, Hongye Li, Zhixian Li, Xin Tian, Meng Wang, Binyu Rao, Baiyi Wu, Xiaoming Xi, Zhilun Chen, Zefeng Wang, Jinbao Wang

Author Affiliations +

Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 124782L (2022) https://doi.org/10.1117/12.2654758
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China

Abstract

We report here a monolithic all-fiber laser oscillator with femtosecond-written FBGs and side-pumping coupler. The splice-free resonant cavity is realized by directly writing a pair of fiber Bragg gratings (FGBs) into an ytterbium-doped fiber (YDF) based on the femtosecond laser phase mask scan method. Furthermore, a (2+1)×1 side-pumping coupler is fabricated in the same YDF by the taper-fused method. When pumping with two 976 nm laser diodes (LD), a maximum output power of 1218 W is realized at the 1070 nm, corresponding to the optical-optical conversion efficiency of about 71%. This work displays an extremely compact and stable fiber laser oscillator, which is of great significance to the development of high power fiber lasers.

Citation Download Citation

Hao Li, Hongye Li, Zhixian Li, Xin Tian, Meng Wang, Binyu Rao, Baiyi Wu, Xiaoming Xi, Zhilun Chen, Zefeng Wang, and Jinbao Wang "1200 W monolithic all-fiber laser with fs-written fiber Bragg gratings and side-pumping coupler", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 124782L (15 December 2022); https://doi.org/10.1117/12.2654758

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