S-band Q-switched fiber laser using MoSe 2 saturable absorber

• Main Authors: Ahmad, Harith, Ismail, Mohd Afiq, Sathiyan, Samikannu, Reduan, Siti Aisyah, Ruslan, Nur E'zzati, Lee, Cherrie Sue Jing, Zulkifli, Mohd Zamani, Thambiratnam, Kavintheran, Ismail, Mohammad Faizal, Harun, Sulaiman Wadi
• Format: Article
• Published: Elsevier 2017
• Subjects: QC Physics; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.um.edu.my/19827/; https://doi.org/10.1016/j.optcom.2016.07.010

A passively Q-switched S-band fiber laser using Molybdenum Diselenide (MoSe2) saturable absorber (SA) is proposed and demonstrated. The SA is fabricated by depositing MoSe2 onto two fiber ferrules using the drop-cast method before heating and connecting the two fiber ferrules to form the SA. The passively Q-switched fiber laser designed using the MoSe2 SA has an operational range of 1491.0–1502.0 nm. The output pulse train has a pulse-width ranging from 2.0 μs to 1.0 μs and corresponding repetition rate of between 34.5 kHz and 90 kHz with increasing pump powers, as well as a signal-to-noise of about 35.97 dB. The peak performance of the proposed laser is between 1480.0 and 1490.0 nm, corresponding to the first peak gain region with the S-band.