Acta Optica Sinica, Volume. 42, Issue 23, 2306002(2022)
Kilowatt-Level Monolithic All-Fiber Laser Oscillator
Based on the femtosecond laser inscribing technology and side-pump coupling technology, a kilowatt-level monolithic all-fiber laser oscillator without fusion splice in the main optical path is obtained. In addition, a pair of fiber Bragg gratings are written in a large-mode-area and double-cladding ytterbium-doped fiber by combining femtosecond laser and phase mask, so as to form a resonant cavity. Meanwhile, two side-pump couplers are fabricated by tapered-fused technology in the same ytterbium-doped fiber. With a semiconductor laser of 976 nm as the pump source, the maximum output power of 1052 W is obtained at a center wavelength of 1070 nm, and the optical-optical conversion efficiency and the beam quality
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Hao Li, Hongye Li, Zhixian Li, Xin Tian, Meng Wang, Binyu Rao, Baiyi Wu, Xiaoming Xi, Zilun Chen, Zefeng Wang, Jinbao Chen. Kilowatt-Level Monolithic All-Fiber Laser Oscillator[J]. Acta Optica Sinica, 2022, 42(23): 2306002
Category: Fiber Optics and Optical Communications
Received: Mar. 14, 2022
Accepted: Jun. 13, 2022
Published Online: Dec. 14, 2022
The Author Email: Wang Zefeng (zefengwang_nudt@163.com)