Open AccessLinearly-polarized single-transverse-mode high-energy multi-ten nanosecond fiber amplifier with 50W average power
Author(s) -
Changgeng Ye,
Mali Gong,
Ping Yan,
Qiang Liu,
Gang Chen
Publication year - 2006
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.007604
Subject(s) - optics , laser linewidth , brillouin scattering , materials science , extinction ratio , polarization (electrochemistry) , fiber laser , physics , optical fiber , laser , wavelength , chemistry
A linearly polarized single-transverse-mode Yb-doped double clad polarization-maintaining fiber amplifier at 1064nm is reported, which delivers 53.1W average power at 40kHz repetition rate, with pulse energy >1mJ, duration 30ns, polarization extinction ratio 13dB, and M(2)1.2. Stimulated Brillouin scattering (SBS) phenomenon during amplification is discussed, and a new SBS suppression approach using linewidth broadening induced by self-phase modulation (SPM) is demonstrated.