Passively Q-switched erbium-doped fiber laser at C-band region based on WS_2 saturable absorber

Ahmad, Harith and Ruslan, N.E. and Ismail, M.A. and Reduan, S.A. and Lee, C.S.J. and Sathiyan, S. and Sivabalan, S. and Harun, Sulaiman Wadi (2016) Passively Q-switched erbium-doped fiber laser at C-band region based on WS_2 saturable absorber. Applied Optics, 55 (5). p. 1001. ISSN 0003-6935

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Official URL: http://dx.doi.org/10.1364/AO.55.001001

Abstract

We demonstrate a Q-switched erbium-doped fiber laser using tungsten disulfide (WS2) as a saturable absorber. The WS2 is deposited onto fiber ferrules using a drop-casting method. Passive Q-switched pulses operating in the C-band region with a central wavelength of 1560.7 nm are successfully generated by a tunable pulse repetition rate ranging from 27.2 to 84.8 kHz when pump power is increased from 40 to 220 mW. At the same time, the pulse width decreases from a maximum value of 3.84 μs to a minimum value of 1.44 μs. The signal-to-noise ratio gives a stable value of 43.7 dB. The modulation depth and saturation intensity are measured to be 0.99% and 36.2 MW/cm2, respectively.

Item Type: Article
Uncontrolled Keywords: Erbium; Fiber lasers; Optical pumping; Pulse repetition rate; Q switching; Signal to noise ratio
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Oct 2017 06:51
Last Modified: 09 Oct 2018 03:40
URI: http://eprints.um.edu.my/id/eprint/18103

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