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

Yap, Y. K. and Ahmad, F. and Chong, W. Y. and Ahmad, H. (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 (Taiwan), 24 (4). ISSN 2708-9967

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Official URL: http://dx.doi.org/10.6180/jase.202108_24(4).0007

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.

Item Type:Article
Uncontrolled Keywords:grapheme oxide, nano-material, pulse width
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Malaysia-Japan International Institute of Technology
ID Code:95023
Deposited By: Narimah Nawil
Deposited On:29 Apr 2022 22:01
Last Modified:29 Apr 2022 22:01

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