Tungsten Disulfide Film Based Saturable Absorber for Q-switched Pulses Generation

Omar, Suziana and Arof, Hamzah and Musa, Baktiar and Ali, M.I.M. and Jusoh, Zulzilawati and Apsari, Retna and Harun, Sulaiman Wadi (2020) Tungsten Disulfide Film Based Saturable Absorber for Q-switched Pulses Generation. Nonlinear Optics, Quantum Optics, 52 (3-4). pp. 229-236. ISSN 1543-0537,

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Official URL: https://www.oldcitypublishing.com/journals/nloqo-h...


We have fabricated tungsten disulfide (WS2) film and use this as saturable absorber (SA) in Erbium-doped fiber laser (EDFL) cavity to generate Q-switched pulses train. The SA was obtained by mixing WS2 into PVA solution to form a composite film after drying process. A stable Q-switched pulses train operating at 1565.2 nm was successfully achieved by inserting the developed SA device into the EDFL cavity. The repetition rate of the laser can be tuned from 50.26 to 67.2 kHz as the pump power increased from 71.7 to 112.9 mW. At pump power of 112.9 mW, the maximum average output power of 1.94 mW, shortest pulse width of 1.92 us and maximum single pulse energy of 28.9 nJ were obtained. The generated pulses are consistent and stable, which useful in many practical applications. © 2020 Old City Publishing. All rights reserved.

Item Type: Article
Funders: University of Malaya (grant No. Fg006-17AFR)
Uncontrolled Keywords: Q-switching; Saturable absorber; tungsten disulfide
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 25 Aug 2020 08:31
Last Modified: 25 Aug 2020 08:31
URI: http://eprints.um.edu.my/id/eprint/25455

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