Graphene in chitin based passive Q-switcher

Zuikafly, Siti Nur Fatin and Wan Nawawi, Wan Mohd Fazli and Ngee, Lim Hong and Yahaya, Hafizal and Yahya, W. J. and Ahmad, Faizah (2019) Graphene in chitin based passive Q-switcher. In: Photonics Meeting 2019, The 2nd Annual Conference and Workshop, 8 - 9 July 2019, Dungun, Terengganu.

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Abstract

Many materials have been utilized as saturable absorbers in generating pulsed lasers. By incorporating them with host polymers such as polymethylmethacrylate (PMMA), polyvinyl alcohol (PVA) and polyethylene oxide (PEO), the process of saturable absorber integration into the laser cavity is made easier. This work reported the generation of Q-switched pulsed lasers based on graphene embedded in chitin saturable absorber. Graphene: chitin with a concentration of 1:1 and 1.5:1 are integrated into a fiber laser cavity and the laser performance of both SAs are recorded and compared. The graphene chitin SA of 1:1 concentration produces a higher repetition rate and shorter pulse duration of 111.77 kHz and 1.328 μs, respectively. However, the SA with higher graphene content operated at a larger range of input pump power yielding a higher instantaneous peak power and pulse energy of 7.29 mW, and 14.37 nJ, respectively. This work introduces chitin as a potentially excellent natural host polymer as an alternative to conventional ones such as polyvinyl alcohol (PVA) and polyethylene oxide (PEO).

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	7777/79609
Uncontrolled Keywords:	Chitin Fiber lasers, Graphene Laser resonators, Optical pumping, Photonics, Polyethylene oxides, Polyethylenes, Polyvinyl alcohols, Pulse repetition rate, Q switching, Saturable absorbers, Semiconductor quantum wells
Subjects:	T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Wan Mohd Fazli Wan Nawawi
Date Deposited:	18 Mar 2020 10:37
Last Modified:	15 Jul 2020 14:56
URI:	http://irep.iium.edu.my/id/eprint/79609

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