Molybdenum disulfide side-polished fiber saturable absorber Q-switched fiber laser

Ahmad, Harith and Hassan, H. and Safaei, R. and Thambiratnam, K. and Ismail, M.F. and Amiri, I.S. (2017) Molybdenum disulfide side-polished fiber saturable absorber Q-switched fiber laser. Optics Communications, 400. pp. 55-60. ISSN 0030-4018, DOI

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A Q-switched fiber laser based on a Molybdenum disulfide (MoS2) saturable absorber (SA) is proposed and demonstrated. A 3 m long erbium-doped fiber with an absorption coefficient of 11.3 dB/m at 979 nm acts as the linear gain medium of the laser. The SA is formed by depositing a MoS2 layer on a self-fabricated side-polished fiber (SPF), which can be easily fabricated in less than 15 min. The proposed laser has a Q-switching threshold of 14.8 mW, and is capable of generating a pulsed output with a repetition rate and pulse-width of up to 25.27 kHz and 3.19 μs at a maximum pump power of 45.6 mW, as well as an average output power and pulse energy of 2.27 mW and 0.09 μJ at the same pump power. The pulses have an average signal-to-noise ratio of 37.8 dB, indicating a stable output and making the proposed laser highly suited for a variety of sensor, communications, and industrial applications.

Item Type: Article
Funders: Ministry of Higher Education, Malaysia with the grants LRGS (2015) NGOD/UM/KPT and GA010 – 2014 (ULUNG), University of Malaya. Grant RP029A-15AFR
Uncontrolled Keywords: Molybdenum disulfide (MoS2); Q-switched fiber laser; Side-polished fiber
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Jul 2017 07:55
Last Modified: 11 Oct 2018 03:23

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