Dual-wavelength Q-switched thulium doped fiber laser with TiO2 film saturable absorber

Ahmad, Bilal A. and Rusdi, Muhammad Farid Mohd and Jusoh, Zulzilawati and Latiff, Anas Abdul and Harun, Sulaiman Wadi (2018) Dual-wavelength Q-switched thulium doped fiber laser with TiO2 film saturable absorber. Optoelectronics and Advanced Materials, Rapid Communications, 12 (5-6). pp. 249-252. ISSN 1842-6573,

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Official URL: https://oam-rc.inoe.ro/articles/dual-wavelength-q-...


We report a dual-wavelength Q-switched Thulium doped fiber laser based on a Titanium dioxide (TiO2) saturable absorber. The TiO2 was embedded in polyvinyl alcohol (PVA) film, which was then sandwiched in between two fiber ferrules in the cavity. By using a Thulium-doped fiber with a slightly larger core, it functions as intra-cavity spectral filter to allow dual-wavelength Q-switching regime to be achieved in the cavity. Our experimental results show that the fiber laser can simultaneously generate Q-switched microsecond pulses at 1954.43 nm and 1957.27 nm, which have the repetition rate varying from 12.89 kHz to 21.93 kHz and 0.54 µJ maximum pulse energy. Our proposed scheme is quite simple and thus it can be implemented at a low cost.

Item Type: Article
Funders: Malaysian Ministry of Higher Education (Grant No. FRGS/1/2015/SG02/UITM/03/3), University of Malaya (Grant. No. FG006-17AFR)
Uncontrolled Keywords: Q-switching; TiO2 saturable absorber; Thulium-doped fiber laser; Dual-wavelength laser
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 Oct 2019 01:01
Last Modified: 08 Oct 2019 01:01
URI: http://eprints.um.edu.my/id/eprint/22690

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