Q-switched Er-doped fiber laser with low pumping threshold using graphene saturable absorber

• Main Authors: Ahmad, Fauzan, Raja Rosdin, Raja Zaimas, Mohamad Ali, Norfizah, Arof, Hamzah, Harun, Sulaiman Wadi B.
• Format: Article
• Published: Science Press 2014
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utm.my/id/eprint/62370/; http://dx.doi.org/10.3788/COL201412.091404

We propose a Q-switched Er-doped fiber laser (EDFL) with a threshold pumping power as low as 7.4 mW, and demonstrate using graphene polyvinyl alcohol (PVA) thin film as a passive saturable absorber (SA). The SA is fabricated from graphene flakes, which is synthesized by electrochemical exfoliation o...