Graphene-oxide-based saturable absorber for all-fiber Q-switching with a simple optical deposition technique

Ahmad, H and Muhammad, Farah Diana and Zulkifli, Mohd Zamani and Harun, Sulaiman Wadi (2012) Graphene-oxide-based saturable absorber for all-fiber Q-switching with a simple optical deposition technique. IEEE Photonics Journal, 4 (6). pp. 2205-2213. E-ISSN 1943-0655

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Abstract

A Q-switched erbium-doped fiber laser (EDFL) incorporating a graphene-oxidebased saturable absorber (SA) is proposed and demonstrated. The SA is fabricated by first dissolving graphene oxide nanopowder in water and subsequently using the thermophoresis effect to deposit it onto the fiber ferrule. The SA is integrated into a ring cavity EDFL, which uses a 3-m-long MetroGain Type-12 erbium-doped fiber (EDF) as the gain medium. The EDFL has a continuous-wave (CW) lasing threshold at a pump power of 9 mW, with Q-switching behavior observed at pump powers 18 mW and above. At the maximum pump power of 100 mW, the Q-switched pulses generated by the EDFL have a repetition rate and pulsewidth of 61 kHz and 6.6 s, respectively, along with an average output power of about 3.7 mW. Additionally, at the maximum power, the energy per pulse and peak power of the generated pulses are 61.3 nJ and 9.3 mW, respectively

Item Type:	Article (Journal)
Additional Information:	8870/84319
Uncontrolled Keywords:	Graphene oxide, saturable absorber (SA), Q-switching, erbium-doped fiber laser (EDFL)
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Physics Kulliyyah of Science
Depositing User:	Dr M Z Zulkifli
Date Deposited:	19 Nov 2020 14:54
Last Modified:	19 Nov 2020 14:54
URI:	http://irep.iium.edu.my/id/eprint/84319

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