Open AccessPower scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers
Author(s) -
Jiajian Zhu,
Pu Zhang,
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 , amplifier , tandem , laser , core (optical fiber) , double clad fiber , photodarkening , ytterbium , laser power scaling , optoelectronics , optical fiber , dispersion shifted fiber , doping , fiber optic sensor , physics , 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.