Tunable Q-switched Erbium-doped Fiber Laser with Titanium Nanoparticles Deposited onto PVA Film as Saturable Absorber

Rizman, Zairi Ismael and Ahmad, Bilal A. and Rusdi, Muhammad Farid Mohd and Jusoh, Zulzilawati and Harun, Sulaiman Wadi and Yasin, Moh (2020) Tunable Q-switched Erbium-doped Fiber Laser with Titanium Nanoparticles Deposited onto PVA Film as Saturable Absorber. Nonlinear Optics, Quantum Optics, 52 (3-4). pp. 167-175. ISSN 1543-0537,

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


We demonstrate a tunable Q-switched Erbium-doped fiber laser (EDFL) using the newly developed titanium nanoparticles based saturable absorber (SA) for the first time. The Titanium nanoparticles were deposited onto the surface of polyvinyl alcohol (PVA) film via an electron beam evaporation process and inserted into an Erbium-doped fiber laser (EDFL) cavity to achieve passive Q-switching. A tunable bandpass filter was used in the EDFL cavity to tune the operating wavelength of the Q-switched EDFL from 1535 to 1565 nm. At operating wavelength of 1535 nm, the repetition rate of the self-starting Q-switching pulses is increased from 18.3 kHz to 34.2 kHz while the pulse width is reduced from 19.4 to 10.45 us with increasing pump power from 14.9 to 37.7 mW. The Q-switching pulse shows no spectral modulation with a peak-To-pedestal ratio of 68 dB indicating the high stability of the laser. The highest pulse energy of 0.25 uJ was obtained with pump power of 37.7 mW at operating wavelength of 1565 nm. This is a simple and cost-effective light source for environmental sensing, metrology and biomedical diagnostics. © 2020 Old City Publishing. All rights reserved.

Item Type: Article
Funders: Ministry of Higher Education grant Scheme (PRgS/1/2017/STg02/uITM/02/1), Airlangga university – Mandate Research grant (No. 384/uN3.14/LT/2019)
Uncontrolled Keywords: Q-switching; titanium nanoparticles; passive saturable absorber; EDFL
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: 05 Aug 2020 07:15
Last Modified: 05 Aug 2020 07:15
URI: http://eprints.um.edu.my/id/eprint/25261

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