Tunable S+/S band Q-switched thulium-doped fluoride fiber laser using tungsten ditelluride (WTe2)

Ahmad, H. and Ismail, Nor Najwa and Aidit, S. N. and Yusoff, Norazriena and Zulkifli, Mohd Zamani (2020) Tunable S+/S band Q-switched thulium-doped fluoride fiber laser using tungsten ditelluride (WTe2). Results in Physics, 17. E-ISSN 2211-3797

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Abstract

A tunable, passively Q-switched thulium-doped fluoride fiber laser (TDFFL) using a tungsten ditelluride (WTe2) thin film based saturable absorber (SA) was proposed and its operational efficacy demonstrated. At a maximum pump power of 250 mW, a Q-switched output at 1494 nm with a 3-dB bandwidth of 3 nm was obtained. The repetition rate was measured to be 36.5 kHz with a minimum pulse width of 3.7 µs, as well as a signal-to-noise ratio (SNR) of approximately 42 dB. Utilizing a tunable bandpass filter (TBPF), tunable Q-switching operation was achieved from 1459 to 1513 nm, giving a tuning range of 54 nm. The proposed laser would have significant use for systems operating in the S-band region, particularly for optical communications networks.

Item Type:	Article (Journal)
Additional Information:	8870/82216
Uncontrolled Keywords:	Q-switched, Saturable absorber, TDFFL, Tunable, WTe2
Subjects:	Q Science > Q Science (General) 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:	17 Aug 2020 10:53
Last Modified:	17 Aug 2020 10:53
URI:	http://irep.iium.edu.my/id/eprint/82216

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