Tunable passively Q-switched thulium doped fluoride fibre (TDFF) laser using reduced graphene oxide-silver (rGO-Ag) as saturable absorber

Ahmada, H. and Azmy, N. F. and Reduan, S. A. and Reduan, S. A. and Yusoff, N. and Bayang, L. and Zulkifli, Mohd Zamani and Thambiratnam, K. (2020) Tunable passively Q-switched thulium doped fluoride fibre (TDFF) laser using reduced graphene oxide-silver (rGO-Ag) as saturable absorber. Journal of Modern Optics, 67 (11). pp. 1022-1030. ISSN 0950-0340 E-ISSN 1362-3044

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Abstract

A tunable, passively Q-switched thulium doped fluoride fibre (TDFF) laser using a reduced-graphene oxide-silver (rGO-Ag) thin film as a saturable absorber (SA) for S band operation is proposed and its efficacy demonstrated. Over a pump power range of 91.4 mW up to 158.6 mW, passively generated Q-switched pulses are observed with repetition rates from 20 to 34.5 kHz and pulse widths from 3.1 to 7.1 µs. The highest pulse energy observed is 101.2 nJ with a signal to noise ratio of ∼ 42 dB. The proposed laser has a tuning range ∼ 52 nm from 1458 to 1510 nm with a tunable bandpass filter (TBPF) introduced into the cavity.

Item Type:	Article (Journal)
Additional Information:	8870/84006
Uncontrolled Keywords:	Wavelength tunable system; Q-switched fibre laser; reduced graphene oxide-silver (rGO-Ag)
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr M Z Zulkifli
Date Deposited:	28 Oct 2020 10:33
Last Modified:	10 Apr 2021 14:18
URI:	http://irep.iium.edu.my/id/eprint/84006

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