Numerical analysis of output performance of Nd-doped double-clad fiber lasers

Nam Seong Kim; Toshihiro Hamada; R. Mahendra Prabhu; Cheng Li; Jie Song; Deyuan Shen; Anping Liu; Ken-ichi Ueda

doi:10.1117/12.380933

3 April 2000 Numerical analysis of output performance of Nd-doped double-clad fiber lasers

Nam Seong Kim, Toshihiro Hamada, R. Mahendra Prabhu, Cheng Li, Jie Song, Deyuan Shen, Anping Liu, Ken-ichi Ueda

Proceedings Volume 3889, Advanced High-Power Lasers; (2000) https://doi.org/10.1117/12.380933
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

Numerical analysis for the high-power double-clad fiber lasers is presented and experimental results using different microscope objectives for focusing into a Nd-doped rectangular double-clad fiber also performed. The numerical analysis includes dependence of output power on output mirror reflectivity, absorbed pump power, loss, and fiber length and pump power distribution for the cases of one-end and two-end pumps with 20 dB/km loss. Calculated conversion efficiencies are 76.36%, 69.73%, and 63.84% for lossless, two-end pump, and one-end pump fiber lasers, respectively. Slope efficiencies from absorbed pump power/output powers measured using microscope objectives are 16.8%/182 mW, 53.8%/351 mW, 24.9%/1240 mW, and 13.9%/ 649 mW for magnifications of 5x, 10x, 20x, and 40x, respectively.

Citation Download Citation

Nam Seong Kim, Toshihiro Hamada, R. Mahendra Prabhu, Cheng Li, Jie Song, Deyuan Shen, Anping Liu, and Ken-ichi Ueda "Numerical analysis of output performance of Nd-doped double-clad fiber lasers", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); https://doi.org/10.1117/12.380933

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