Open AccessDual-wavelength rectangular pulse Yb-doped fiber laser using a microfiber-based graphene saturable absorber
Author(s) -
Nian Zhao,
Meng Li,
Hao Líu,
Xiaoting Zheng,
Qiu-Yi Ning,
Aiping Luo,
ZhiChao Luo,
WenCheng Xu
Publication year - 2014
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.22.010906
Subject(s) - microfiber , saturable absorption , materials science , optics , fiber laser , wavelength , laser , optoelectronics , graphene , band pass filter , physics , nanotechnology , composite material
We reported on the generation of dual-wavelength rectangular pulses in a Yb-doped fiber laser (YDFL) by using a microfiber-based graphene saturable absorber (GSA). The duration of dual-wavelength rectangular pulse could be varied from 1.41 ns to 4.23 ns with the increasing pump power. With a tunable bandpass filter, it was found that the characteristics of the rectangular pulses centered at 1061.8 nm and 1068.8 nm are similar to each other. Moreover, the dual-wavelength switchable operation was also realized by properly rotating the polarization controllers (PCs). The demonstration of the dual-wavelength rectangular pulses from a YDFL would open some applications for fields such as spectroscopy, biomedicine and sensing research.