Open AccessTapered fiber based high power random laser
Author(s) -
Hanwei Zhang,
Xueyuan Du,
Pu Zhang,
Xiaolin Wang,
Xiaojun Xu
Publication year - 2016
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.24.009112
Subject(s) - optics , fiber laser , power (physics) , fiber , materials science , core (optical fiber) , scaling , laser , optical fiber , graded index fiber , polarization maintaining optical fiber , physics , fiber optic sensor , mathematics , geometry , quantum mechanics , composite material
We propose a novel high power random fiber laser (RFL) based on tapered fiber. It can overcome the power scaling limitation of RFL while maintaining good beam quality to a certain extent. An output power of 26.5 W has been achieved in a half-open cavity with one kilometer long tapered fiber whose core diameter gradually changes from 8 μm to 20 μm. The steady-state light propagation equations have been modified by taking into account the effective core area to demonstrate the tapered RFL through numerical calculations. The numerical model effectively describes the power characteristics of the tapered fiber based RFL, and both the calculating and experimental results show higher power exporting potential compared with the conventional single mode RFL.