Open AccessGraphite Saturable Absorber for Q-Switched Fiber Laser
Author(s) -
Y.R. Yuzaile,
Noor Azura Awang,
Zahariah Zakaria,
Noor Ummi Hazirah Hani Zalkepali,
Amirah Abdul Latif,
Ahmad Najib Azmi,
Fatin Shaqira Abdul Hadi
Publication year - 2018
Publication title -
international journal of engineering and technology
Language(s) - English
Resource type - Journals
ISSN - 2227-524X
DOI - 10.14419/ijet.v7i4.30.22303
Subject(s) - saturable absorption , materials science , fiber laser , ferrule , optics , q switching , laser , graphite , fiber , saturation (graph theory) , optical fiber , optoelectronics , composite material , physics , mathematics , combinatorics
This paper reported a successful demonstration on Q-switched fiber laser by using graphite as saturable absorber (SA). The graphite is deposited on the fiber ferrule through a simple mechanical exfoliation method. The modulation depth of the graphite SA is 19.2% with a saturation intensity of 85 MW/cm². The maximum achievable pulse repetition rates and pulse width are 42.41 kHz and 3.40 μs respectively. Meanwhile, its optical signal-to-noise ratio is about 50.81 dB. The Q-switched pulses have the maximum pulse energy of 5.84 nJ. These outcomes demonstrated that a stable output of passively Q-switched fiber laser is produced and can be applied for various optical fiber applications.