Abstract

This paper presents the experimental results of constructing high-power high-efficiency Raman fiber lasers (RFLs) using phosphosilicate fibers as the gain medium and fiber Bragg gratings (FBGs) as the laser cavity. It is found that the fiber length is more critical than reflection levels of the FBGs in determining the laser performance. The experimental results reveal that high-power lasers can only be realized with fiber lengths shorter than 500 m in fiber containing 13 mol % P2O5. Longer fiber can result in a reduction of power in the first-order Stokes line due to stimulated scattering of other Stokes lines. More than 10 W of output power has been achieved at 1248 nm from lasers with fiber lengths of 200-500 m, pumped with a 20-W Yb double-clad fiber laser at 1070.75 nm. The maximum slope efficiency obtained is 84.2% in a 200-m RFL, which is close to the quantum limit of 85.8% for the wavelength conversion from 1070.75 to 1248 nm.

© 2003 IEEE

More than 200  W random Raman fiber laser with ultra-short cavity length based on phosphosilicate fiber

Jinyan Dong, Lei Zhang, Jiaqi Zhou, Weiwei Pan, Xijia Gu, and Yan Feng
Opt. Lett. 44(7) 1801-1804 (2019)

All-fiber widely tunable Raman fiber laser with controlled output spectrum

S. A. Babin, D. V. Churkin, S. I. Kablukov, M. A. Rybakov, and A .A. Vlasov
Opt. Express 15(13) 8438-8443 (2007)

Hundred-watt-level phosphosilicate Raman fiber laser with less than 1% quantum defect

Xiaoya Ma, Jun Ye, Yang Zhang, Jiangming Xu, Liangjin Huang, Jinyong Leng, Zhiyong Pan, and Pu Zhou
Opt. Lett. 46(11) 2662-2665 (2021)

Raman fiber laser with 81 W output power at 1480 nm

J. W. Nicholson, M. F. Yan, P. Wisk, J. Fleming, F. DiMarcello, E. Monberg, T. Taunay, C. Headley, and D. J. DiGiovanni
Opt. Lett. 35(18) 3069-3071 (2010)

Ultralow-quantum-defect Raman laser based on the boson peak in phosphosilicate fiber

Yang Zhang, Jiangming Xu, Jun Ye, Jiaxin Song, Tianfu Yao, and Pu Zhou
Photon. Res. 8(7) 1155-1160 (2020)