Generation of Q-switched fiber laser at 1.0-, 1.55- and 2.0-µm employing a spent coffee ground based saturable absorber

• Main Authors: Mohd. Rusdi, Muhammad Farid, Jafry, Afiq Arif Aminuddin, Abdul Latiff, Anas, Rosol, Ahmad Haziq Aiman, Ab. Rahman, Mohd. Fauzi, Kasim, Nabilah, Abdul Khudus, Muhammad Imran Mustafa, Ahmad, Harith, Harun, Sulaiman Wadi
• Format: Article
• Published: Academic Press Inc. 2021
• Subjects: QC Physics
• Online Access: http://eprints.utm.my/id/eprint/97849/; http://dx.doi.org/10.1016/j.yofte.2020.102434

Spent coffee ground (SCG) was demonstrated as saturable absorber (SA) for Wideband Q-switched fiber lasers generation. The SCG SA has a broad linear absorption that covers from 1000 nm to 2000 nm wavelength and a modulation depth of 30% at 1.55-µm region. Through purification process, the finer SCG...