Conductive graphene as passive saturable absorber with high instantaneous peak power and pulse energy in Q-switched regime

Zuikafly, Siti Nur Fatin and Khalifa, Ali and Ahmad, Fauzan and Shafie, Suhaidi and Harun, Sulaiman Wadi (2018) Conductive graphene as passive saturable absorber with high instantaneous peak power and pulse energy in Q-switched regime. Results in Physics, 9. pp. 371-375. ISSN 2211-3797

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Official URL: https://doi.org/10.1016/j.rinp.2018.03.002

Abstract

The Q-switched pulse regime is demonstrated by integrating conductive graphene as passive saturable absorber producing relatively high instantaneous peak power and pulse energy. The fabricated conductive graphene is investigated using Raman spectroscopy. The single wavelength Q-switching operates at 1558.28 nm at maximum input pump power of 151.47 mW. As the pump power is increased from threshold power of 51.6 mW to 151.47 mW, the pulse train repetition rate increases proportionally from 47.94 kHz to 67.8 kHz while the pulse width is reduced from 9.58 μs to 6.02 μs. The generated stable pulse produced maximum peak power and pulse energy of 32 mW and 206 nJ, respectively. The first beat node of the measured signal-to-noise ratio is about 62 dB indicating high pulse stability.

Item Type: Article
Uncontrolled Keywords: Conductive graphene; passive saturable absorber; high instantaneous peak power; pulse energy; Q-switched regime
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 25 Jan 2019 02:06
Last Modified: 25 Jan 2019 02:06
URI: http://eprints.um.edu.my/id/eprint/20157

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