High-Pulse-Energy All-Normal-Dispersion Yb-Doped Fiber Laser Based on Nonlinear Polarization Evolution

We report an all-normal-dispersion ytterbium fiber laser mode locked by nonlinear polarization evolution. With a 347-m-long all-fiber ring cavity, a pulse energy of 263 nJ at a repetition rate of 613 kHz is achieved, which is the highest per-pulse energy directly obtained from an all-fiber mode-lock...

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Bibliographic Details
Published in:Chinese physics letters 2015-11, Vol.32 (11), p.114202-114201
Main Authors: Wang, Jun-Li, Wang, Xue-Ling, He, Bo-Rong, Wang, Yong-Gang, Zhu, Jiang-Feng, Wei, Zhi-Yi
Format: Article
Language:English
Subjects:
Evolution
Fiber lasers
Holes
Lasers
Nonlinearity
Polarization
Slopes
Ytterbium
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Summary:We report an all-normal-dispersion ytterbium fiber laser mode locked by nonlinear polarization evolution. With a 347-m-long all-fiber ring cavity, a pulse energy of 263 nJ at a repetition rate of 613 kHz is achieved, which is the highest per-pulse energy directly obtained from an all-fiber mode-locked laser doped by ytterbium ions. The compact and operation-robust laser yields a well-shaped spectrum centered at 1032 nm with a bandwidth (FWHM) of 4 nm, and the slope efficiency is as high as 27.5%. The proposed low-repetition-rate high-pulse-energy mode-locked fiber laser will be a promising seed for all-fiber chirped pulsed amplification systems.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/11/114202