Q-switched fiber laser operating at 1 μm region with electron beam deposited titanium nanoparticles

Muhammad, Ahmad Razif and Zakaria, Rozalina and Wang, Pengfei and Ahmad, Muhammad Taufiq and Rahim, Hazli Rafis Abdul and Arof, Hamzah and Harun, Sulaiman Wadi (2019) Q-switched fiber laser operating at 1 μm region with electron beam deposited titanium nanoparticles. Optics & Laser Technology, 120. p. 105702. ISSN 0030-3992, DOI https://doi.org/10.1016/j.optlastec.2019.105702.

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Official URL: https://doi.org/10.1016/j.optlastec.2019.105702


We demonstrate the generation of Q-switched pulse train in Ytterbium-Doped Fiber Laser (YDFL) cavity by employing titanium (Ti) thin film as a passive saturable absorber (SA). The Ti-SA was fabricated by depositing Ti particles using electron beam evaporation on the surface of a polyvinyl alcohol (PVA) thin film. Subsequently, a stable Q-switching pulse train was successfully generated by introducing the Ti-SA into a laser cavity. The laser generated a self-starting pulse train with repetition rate that is tunable from 42.96 to 98.12 kHz as the 980 nm pump power is increased from 122.5 mW to 197 mW. At 197 mW pump power, the laser produced a Q-switching pulse train with pulse duration and pulse energy of 3.95 μs and 57.48 nJ, respectively. This demonstration proves that Ti-SA is suitable for generating Q-switched fiber laser. Furthermore, it is easy and cheap to fabricate. © 2019 Elsevier Ltd

Item Type: Article
Funders: National Key R&D Program of China under grant 2016YFE0126500, National Natural Science Foundation of China (NSFC) under grant 61575050, Fundamental Research Funds for the Central Universities under grant HEUCFG201841, Key Program for Natural Science Foundation of Heilongjiang Province of China under grant ZD2016012, Open Fund of the State Key Laboratory on Integrated Optoelectronics under Grant IOSKL2016 KF03, University of Malaya under the grant schemes (Grant No: PG004-2016A and FG006-17AFR)
Uncontrolled Keywords: Electron beam evaporation; Poly (vinyl alcohol) (PVA); Q-switched fiber lasers; Q-switched pulse; Repetition rate; Switching pulse; Titanium nanoparticles; Ytterbium-doped fiber lasers
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Mar 2020 01:36
Last Modified: 04 Mar 2020 01:36
URI: http://eprints.um.edu.my/id/eprint/23946

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