Open AccessPassively Q-switched Erbium-doped Fiber Laser using Tungsten Disulfide deposited D-shaped Fiber as Saturable Absorber
Author(s) -
Saodah Omar,
B. Musa,
Zuraini Jusoh,
M. Faiez Ali,
A.A.A. Jafry,
Mohd Hafiz Jali
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/854/1/012021
Subject(s) - saturable absorption , materials science , fiber laser , optics , q switching , tungsten disulfide , fiber , erbium , laser , pulse duration , optoelectronics , wavelength , doping , composite material , physics
This paper generates a stable Q-switching output wavelength 1560 nm by utilizing tungsten disulfide (WS 2 ) as saturable absorber on D-shaped fiber in erbium-doped fiber laser. D-shaped fiber was prepared by using polishing wheel technique with rough and fine polishing is conducted to ensure efficient light-matter interaction inside D-shaped optical fibre. Proposed Q-switched erbium-doped fiber laser generates shortest pulse duration of 3.25 μs with repetition rate of 108.90 kHz. Q-switched generated was stable under pump power of 84.02 mW to 182.92 mW. Obtaining signal-to-noise ratio of 40.58 dB, Q-switched induced contain pulse energy of 14.60 nJ with output power of 0.64 mW to 1.59 mW. Therefore, proposed D-shaped fiber-WS 2 as saturable absorber was stable and efficient for making a portable laser source based on Q-switched.