Open AccessDiode-pumped 1.15 W linearly polarized single-frequency Yb3+-doped phosphate fiber laser
Author(s) -
Shijie Fu,
Xiushan Zhu,
Jie Zong,
Robert A. Norwood,
N. Peyghambarian
Publication year - 2021
Publication title -
optics express
Language(s) - Polish
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.438787
Subject(s) - laser linewidth , materials science , optics , fiber laser , lasing threshold , laser , slope efficiency , fiber bragg grating , optoelectronics , physics
Compact and robust high-power single-frequency laser oscillators are in great demand for some specific applications where narrow-linewidth lasers with extremely low noise are required. In this paper, we report a single-mode-diode-pumped watt-level single-frequency Yb 3+ -doped phosphate fiber laser at 1050 nm based on an all-fiber distributed Bragg reflector cavity. A maximum output power of 1.15 W with a slope efficiency of 66% was achieved with 18-mm-long 8 wt.% Yb 3+ -doped phosphate fiber. Stable, single-longitudinal-mode lasing with a spectral linewidth of 9.6 kHz and polarization extinction ratio of ∼30 dB was obtained.