Open AccessHigh-average-power operation of a pulsed Raman fiber amplifier at 1686 nm
Author(s) -
Weichao Yao,
Bihui Chen,
Jianing Zhang,
Yongguang Zhao,
Hao Chen,
Deyuan Shen
Publication year - 2015
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.23.011007
Subject(s) - materials science , optics , fiber laser , raman spectroscopy , amplifier , laser , optoelectronics , power (physics) , wavelength , optical fiber , dispersion shifted fiber , optical amplifier , fiber , fiber optic sensor , physics , composite material , cmos , quantum mechanics
We report on high-average-power operation of a pulsed Raman fiber amplifier at ~1686 nm which cannot be covered by rare-earth-doped fiber lasers. The Raman fiber amplifier was pumped by a home-made 1565.2 nm Q-switched Er,Yb fiber laser and worked at a repetition frequency of 184 kHz. With 0.8 km Raman fiber, 4.4 W of average output power at the 1st order Stokes wavelength of 1686.5 nm was obtained for launched pump power of 16.2 W, corresponding to an optical-to-optical conversion efficiency of 27.2%. Further increasing the pump power, high-order Stokes waves grew gradually, resulting in a total output power of 6.7 W at the 19.2 W launched pump power.