Open AccessSamarium (III) oxide thin film as a saturable absorber for the passively Q-switched Tm-doped fiber laser
Author(s) -
Khairul Nizam Rusdi,
Mohamad Badrol Hisyam,
Muhammad Farid Mohd Rusdi,
Nur Farhanah Zulkipli,
Anas Abdul Latiff,
Sulaiman Wadi Harun,
Nur Ubaidah Saidin
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 - 10.1088/1742-6596/1371/1/012026
Subject(s) - materials science , saturable absorption , fiber laser , doping , thulium , fiber , q switching , polyvinyl alcohol , laser , optics , optoelectronics , composite material , physics
We have demonstrated a passive Q-switched Thulium-doped fiber laser (TDFL using samarium oxide (Sm 2 O 3 ) nanomaterial as saturable absorber (SA). The Sm 2 O 3 based SA was fabricated by simply mixing the Sm 2 O 3 powder solution with polyvinyl alcohol (PVA) solution. The homogeneously mixed solution was spread and dry to form a thin film. A piece of 1 mm x 1 mm of the SA thin film is sandwiched between two fiber ferrules and incorporated into a TDFL ring cavity for pulses generation. By controlling the loss and gain in the cavity, stable Q-switching operation was generated. The repetition rate was tunable from 17.62 kHz to 29.20 kHz by varying the pump power from 619 mW to 784 mW. The smallest pulse width of 3.54 µs and the highest pulse energy of 0.20 uJ were obtained at the highest pump power.