Open AccessNarrow linewidth high output-coupling dual VBG-locked Yb-doped fiber laser
Author(s) -
Pär Jelger,
Valdas Pasiskevicius,
Fredrik Laurell
Publication year - 2010
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.18.004980
Subject(s) - laser linewidth , materials science , optics , fiber laser , fiber bragg grating , slope efficiency , laser , wavelength , optoelectronics , physics
Two equal highly reflective volume Bragg gratings (VBGs) were used to lock an Yb-doped fiber laser. By heating one of the VBGs, its center wavelength was shifted and the laser was locked on the overlap between the main peak of one grating and the side-lobe of the other creating a large outcoupling with high spectral selectivity. With this simple arrangement, unidirectional output is achieved with a narrow linewidth (<2.5 GHz), high efficiency (>70%) and with an output power above 7 W.