Open AccessQ-switched Thulium-doped fiber laser with Bismuth-doped fiber saturable absorber
Author(s) -
B. Musa,
Anas Abdul Latiff,
Muhammad Farid Mohd Rusdi,
M. F. A. Rahman,
Nur Farhanah Zulkipli,
F.S.M. Samsamnun,
A.A.A. Jafry,
Sulaiman Wadi Harun
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1371/1/012024
Subject(s) - saturable absorption , fiber laser , materials science , thulium , slope efficiency , optics , laser , q switching , doping , fiber , pulse duration , bismuth , optoelectronics , physics , metallurgy , composite material
We demonstrate a passive Q-switched all-fiber ring configuration in thulium-doped fiber laser (TDFL) cavity using a bismuth-doped fiber (BDF) as a saturable absorber (SA). A piece of 20 cm long BDF was spliced and incorporated in the laser cavity for Q-switching pulse generation. By raising the pump power from 454 mW to 564 mW, the repetition rate of the laser is tunable within a range from 18.10 kHz to 25.22 kHz while the pulse width reduces from 9.04 µs to 6.98 µs. At maximum pump power, the Q-switched TDFL has output power, a slope efficiency, pulse energy and peak power of 5 mW, 3.53 %, 0.2 µJ and 28.40 mW, respectively.