Gold nanoparticle based saturable absorber for Q-switching in 1.5 µm laser application. (26th October 2017)

• Record Type: Journal Article
• Authors: Ahmad, M T; Muhammad, A R; Zakaria, R; Rahim, H R A; Hamdan, K S; Yusof, H H M; Arof, H; Harun, S W
• Is Part Of: Laser physics. Volume 27:Number 11(2017:Nov.)
• Publication Date: 2017-10-26
• Subjects: saturable absorber -- Q-switching -- EDFLs -- gold nanoparticles; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1555-6611/aa8837
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: We demonstrate passive Q-switching in an erbium-doped fiber laser (EDFL) cavity using gold nanoparticles as a saturable absorber (SA) for the first time. By using a thermal deposition method, gold with nanosized particles was plated onto polyvinyl alcohol film to form the SA. The SA was incorporated into a laser cavity, sandwiched between two fiber ferrules. The EDFL generates a Q-switching pulse in the 1560 nm region with a tunable repetition rate from 24.34 kHz to 88.11 kHz. The pulse tuned to a maximum input pump power of 179.5 mW produced a pulse width and pulse energy of 4.25 µ s and 32.91 nJ, respectively.