Simple fabrication of paper-like graphene oxide for use as saturable absorber in q-switching of fiber laser
Document Type
Article
Publication Date
1-1-2021
Abstract
The rise of graphene has made its derivatives a much sought-after research in nano-material science. One of which that has attracted substantial interest is graphene oxide. Due to its simple top-down synthesis and bandgap tunability, graphene oxide is suited in optoelectronics and photonics applications. Foil or paper-like graphene oxide possesses excellent mechanical strength especially. In this work, we demonstrated a home-made, paper-like graphene oxide for Q-switching operation in a ring erbium-doped fiber laser. The raw material was synthesized using simplified Hummers' method, and subsequently by simple filtration. The free-standing, orderly stacked material is about 6.5 nm thick, corresponding to about 67 layers of uniform sheets. The paper-like material was then transferred directly to a fiber ferrule and sandwiched between two connectors via a fiber adapter. Q-switched pulses were observed when the pump power of the ring laser was increased to about 68 mW. The Q-switched fiber laser has maximum repetition rate, pulse energy, pulse width and average power of 21.5 kHz, 52 nJ, 3.8 ms and 1.1 mW respectively. © 2021 Kalmyk Scientific Centre of Russian Academy of Sciences. All right reserved.
Keywords
Grapheme oxide, Nano-material, Pulsed fiber laser, Q-switched, Repetition rate, Pulse width
Divisions
PHYSICS,photonics
Funders
Ministry of Education of Malaysia under the Fundamental Research Grant Scheme (FRGS/1/2018/STG02/HWUM/02/2)
Publication Title
Journal of Applied Science and Engineering
Volume
24
Issue
4
Publisher
Tamkang University Press