Open AccessSingle stage Yb-doped fiber laser based on gain switching with short pulse duration
Author(s) -
Rok Petkovšek,
Vid Agrež
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.001366
Subject(s) - optics , materials science , fiber laser , pulse duration , laser , laser beam quality , injection seeder , laser power scaling , q switching , nanosecond , optoelectronics , laser beams , physics
A simple solution for producing nanosecond laser pulses can be obtained using gain-switched fiber lasers. In this paper, we present an optimized single stage gain-switched ytterbium-doped fiber laser. Three fiber lengths were tested to show the impact of length on the laser output pulse. A pulse as short as 28 ns at 1.4 kW peak power and a maximum peak power of nearly 2 kW at 41 ns pulse duration was achieved. The laser possess a linear polarized output, very good beam quality of M2 < 1.1, and a spectral bandwidth of 0.11 nm.