Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers | Zendy

Jiajian Zhu | Zendy; Pu Zhou | Zendy; Yanxing Ma | Zendy; Xiaojun Xu | Zendy; Zejin Liu | Zendy

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Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers

Author(s) -

Jiajian Zhu,

Pu Zhou,

Yanxing Ma,

Xiaojun Xu,

Zejin Liu

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.018645

Subject(s) - optics , fiber laser , materials science , numerical aperture , tandem , amplifier , laser , core (optical fiber) , double clad fiber , photodarkening , ytterbium , laser power scaling , optoelectronics , optical fiber , dispersion shifted fiber , physics , fiber optic sensor , cmos , wavelength , composite material

Taking the improved SRS threshold formula into consideration, the power scaling of tandem-pumped Yb-doped silica fiber lasers and amplifiers is analyzed by new models. The results show that the power scaling of tandem-pumped Yb-doped fiber lasers and amplifiers is primarily limited by optical damage, SRS and thermal lens, while the pump brightness induced limitation is almost removed. It is also found that tandem-pumped Yb-doped fiber lasers and amplifiers, based upon state-of-art fiber technology, have the potential to achieve a power limit of 70.7 kW with a core diameter of 63.4 μm, and in the case of a strict single-mode fiber, the power limit is about 13.3 kW with a core numerical aperture of 0.03.

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