Linearly-polarized high-power Raman fiber lasers near 1670 nm

We developed linearly-polarized and diffraction-limited Raman fiber laser (RFL) sources in the 1650-1680 nm spectral range with up to 6.2 W of output power. The pump laser near 1550 nm is a MOPA consisting of a laser diode seed source and two amplifier stages based on different erbium-doped fibers....

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Bibliographic Details
Published in:Laser physics letters 2019-02, Vol.16 (2), p.25102
Main Authors: Thouroude, R, Gilles, H, Cadier, B, Robin, T, Hideur, A, Tyazhev, A, Soulard, R, Camy, P, Doualan, J-L, Laroche, M
Format: Article
Language:English
Subjects:
Engineering Sciences
fiber laser
linearly-polarized laser
Optics
Photonic
Raman laser
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Summary:We developed linearly-polarized and diffraction-limited Raman fiber laser (RFL) sources in the 1650-1680 nm spectral range with up to 6.2 W of output power. The pump laser near 1550 nm is a MOPA consisting of a laser diode seed source and two amplifier stages based on different erbium-doped fibers. Two RFL configurations using a PM single-mode fiber as Raman gain fiber are demonstrated and laser performances are numerically simulated. The first is a free-running laser configuration achieving 6.25 W of output power at 1655 nm and a conversion efficiency of 79%. In the second scheme, an all-fibered RFL using fiber Bragg gratings and emitting 5 W of output power at 1679 nm is demonstrated. In the latter case, performances limitations due to spectral broadening are analyzed.
ISSN:1612-2011
1612-202X
DOI:10.1088/1612-202X/aaf6a4