Silver nanoparticle-film based saturable absorber for passivelyQ-switched erbium-doped fiber laser (EDFL) in ring cavity configuration

Ahmad, Harith and Ruslan, N.E. and Ismail, Mohd Afiq and Ali, Z.A. and Reduan, S.A. and Lee, C.S.J. and Harun, Sulaiman Wadi (2016) Silver nanoparticle-film based saturable absorber for passivelyQ-switched erbium-doped fiber laser (EDFL) in ring cavity configuration. Laser Physics, 26 (9). 095103. ISSN 1054-660X

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Official URL: http://dx.doi.org/10.1088/1054-660X/26/9/095103

Abstract

We report a passive Q-switched erbium-doped fiber laser based on silver (Ag) nanoparticle thin-film saturable absorber (SA). The thin film was sandwiched between two fiber ferrules, which offer flexibility and easy integration into the ring cavity. Self-started and stable Q-switching is achieved at a central wavelength of 1558.7 nm; within the C-band region. The repetition rate and pulse duration shows a typical Q-switched laser profile as we increase the pump power; the repetition rate increases from 19.471-74.074 kHz while pulse duration decreases from 8.88-3.2 μs. A signal-to-noise ratio value of 35 dB was obtained at 100 mW pump power. By using a balanced twin-detector method, the modulation depth and saturation intensity of the Ag nanoparticle thin film were measured to be 31.6% and 0.54 MW cm-2 respectively. This result offers another alternative to the existing SA materials.

Item Type: Article
Uncontrolled Keywords: Erbium-doped fiber laser; Fiber laser; Q-switching; Saturable absorber; Silver nanoparticle-film
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Oct 2017 02:40
Last Modified: 08 Apr 2019 06:22
URI: http://eprints.um.edu.my/id/eprint/17918

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