Q-Switched Fiber Laser With A Tungsten Disulfide Saturable Absorber Prepared By The Drop Casting Method

• Main Authors: Razak, Nurul Nadia, Yasin, Moh, Zakaria, Zahriladha, Abdul Latiff, Anas, Harun, Sulaiman Wadi
• Format: Article
• Language: English
• Published: Photonics Society Of Poland 2017
• Subjects: T Technology (General); TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utem.edu.my/id/eprint/22695/2/752-2925-2-PB.pdf; http://eprints.utem.edu.my/id/eprint/22695/; http://photonics.pl/PLP/index.php/letters/article/view/9-37
• Institution: Universiti Teknikal Malaysia Melaka

We experimentally demonstrate a passively Q-switched erbium-doped fiber laser (EDFL) operation by using a saturable absorber (SA) based on tungsten disulfide (WS2). By depositing a WS2 thin film layer at the end of an optical fiber ferrule, we fabricated an SA device. The SA is incorporated into an Erbium-doped fiber laser (EDFL) cavity to generate a Q-switching pulses train operating at 1559.8 nm. As a result, stable passively Q-switched EDFL pulses with a maximum output pulse energy of 123.2nJ, repetition rate of 104.1kHz, and pulse width of 9.61μs are achieved when the input pump power is 142.1mW at a wavelength of 980nm.