Open Access151W monolithic diffraction-limited Yb-doped photonic bandgap fiber laser at ~978nm
Author(s) -
Wensong Li,
Turghun Matniyaz,
Saddam Gafsi,
Monica T. Kalichevsky-Dong,
Thomas Hawkins,
Joshua Parsons,
Guancheng Gu,
Liang Dong
Publication year - 2019
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.27.024972
Subject(s) - materials science , fiber laser , optics , optoelectronics , laser , photonic crystal fiber , slope efficiency , laser power scaling , fiber , polarization maintaining optical fiber , fiber optic sensor , wavelength , physics , composite material
We demonstrate that the strong 4-level Yb emission in a fiber laser can be almost completely suppressed in an Yb all-solid double-clad photonic bandgap fiber, resulting in highly efficient high-power monolithic Yb fiber lasers operating at the 3-level system. We have achieved single-mode continuous wave laser output power of ~151W at ~978nm with an efficiency of 63% with respect to the launched pump power in a practical monolithic fiber laser configuration for the first time. The demonstrated power in this work are setting new records for diffraction-limited double-clad fiber lasers operating at ~978nm.