Open AccessRandom fiber laser directly generates visible to near-infrared supercontinuum
Author(s) -
Lanjian Chen,
Rui Song,
Chengmin Lei,
Weiping Yang,
Jing Hou
Publication year - 2019
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.27.029781
Subject(s) - supercontinuum , optics , materials science , laser , visible spectrum , fiber laser , infrared , self phase modulation , wavelength , optoelectronics , nonlinear optics , physics , photonic crystal fiber
Supercontinuum (SC) generation directly from a random fiber laser (RFL) structure is limited in spectrum span and output power so far. Investigations on wavelength range improvement of SC generated in RFL are analyzed and discussed. The experimental results show that cascaded four wave mixing (FWM) and passive modulation of pump light can explain the appearance of visible components and pulse performance in time domain respectively. To the best of our knowledge, it is the first time a SC covering visible and near-infrared range with 20-dB bandwidth of more than 660 nm is generated directly from a RFL with average output power of 3.4 W, and the spectrum spanning from 600 nm to 1700nm. This work proves that a RFL can be a novel visible to near-infrared SC generation method which has a great potential in various applications.