Simple fabrication of paper-like graphene oxide for use as saturable absorber in q-switching of fiber laser

Yap, Yuen Kiat and Ahmad, Fauzan and Chong, Wu Yi and Ahmad, Harith (2021) Simple fabrication of paper-like graphene oxide for use as saturable absorber in q-switching of fiber laser. Journal of Applied Science and Engineering, 24 (4). pp. 509-516. ISSN 2708-9967

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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.

Item Type: Article
Uncontrolled Keywords: Grapheme oxide; Nano-material; Pulsed fiber laser; Q-switched; Repetition rate; Pulse width
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Dept of Physics
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 30 Apr 2021 01:05
Last Modified: 30 Apr 2021 01:05

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