Open AccessHigh-order mode Yb-doped fiber lasers based on mode-selective couplers
Author(s) -
Yiping Huang,
Fan Shi,
Teng Wang,
Xiaomin Liu,
Xianglong Zeng,
Huanhuan Liu,
Tingyun Wang,
Pu Zhang
Publication year - 2018
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.26.019171
Subject(s) - fiber laser , optics , laser , materials science , optoelectronics , broadband , physics
We experimentally investigate high-order modes (HOMs) generating at the wavelength of 1.0 μm in all-fiber Yb-doped lasers based on mode-selective couplers (MSCs). Broadband MSCs for HOMs conversion are achieved by optimizing the phase-matching condition at 1.0 μm. Efficient generation of HOMs is demonstrated with the MSCs inserted both into continuous-wave and mode-locked fiber lasers. The slope efficiencies of HOMs (LP 11 , LP 02 and LP 21 ) are presented and discussed. Additionally, cylindrical vector and orbital angular momentum beams are produced out of the MSCs by controlling the polarization states. The results show proof-of-concept implementation of the MSCs, which enables high efficiency of HOMs generation especially in pulsed fiber lasers and holds promising applications in laser material processing.