Open AccessGeneration of Q-switched Erbium-Doped Fiber Laser Using Titanium Dioxide Film Based Saturable Absorber
Author(s) -
Nabil A. Ahmed,
N. H. Kamarulzaman,
Nur Farhanah Zulkipli,
Zuraini Jusoh,
HA Rahman,
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/854/1/012018
Subject(s) - materials science , saturable absorption , fiber laser , erbium , laser , pulse duration , q switching , optics , optoelectronics , titanium dioxide , doping , wavelength , composite material , physics
This work demonstrates a generation of a passively Q-switched erbium-doped fiber laser with titanium dioxide (TiO 2 ) film as saturable absorber. The film is fabricated using a ratio of 2:1 by embedding the rutile nanoparticles (TiO 2 ) into a polyvinyl alcohol (PVA) host film. Short after placing the SA film on the fiber ferrule, a stable 1563.3 nm pulses appeared at a power pump range from 104.62 mW to 145.83 mW. The maximum output power was recorded at 2.05 mW, inducing a maximum pulse energy of 22.63 nJ. The repetition rate shows an increasing trendline from 81.04 kHz to 90.58 kHz while the pulse width decreases from 5.08 μs to 4.12 μs. The high signal to noise ratio (SNR) of 63 dB indicates that the TiO 2 film has a good performance in generating pulsed laser at 1550 nm wavelength.