TY - JOUR
T1 - Q-switched and mode-locked laser based on aluminium zinc oxide deposited onto D-shape fiber as a saturable absorber
AU - Nizamani, Bilal
AU - Khudus, Muhammad Imran Mustafa Abdul
AU - Salam, Sameer
AU - Najm, Mustafa Mohammed
AU - Jafry, Afiq Arif Aminuddin
AU - Hanafi, Effariza
AU - Yasin, Moh
AU - Harun, Sulaiman Wadi
N1 - Publisher Copyright:
© 2021 The Authors
PY - 2021/5
Y1 - 2021/5
N2 - In contrast to the direct insertion of a saturable absorber (SA) to fiber laser cavity, the D-shape fiber coated with a SA material introduces more optical non-linearity and SA damage threshold is increased due to the evanescent field light-matter interaction. In this work, a D-shape fiber coated with aluminium-doped zinc oxide is used as a saturable absorber (SA). A Q-switched operation was obtained at 1559.6 nm. The pulsing was initiated at a low pump power of 25 mW and up to 198 mW, in which the pulses shortened from 6.67 µs to 2 µs and the repetition rate increased from 23.26 kHz to 83.9 kHz. The same technique was used to produce a nanosecond pulse mode-locked operation at 1564.8 nm, with pulse width and a repetition rate of 470 ns and 0.97 MHz, respectively. The laser produced a very stable Q-switching and mode-locking operations with a high signal to noise ratio of ~65 dB.
AB - In contrast to the direct insertion of a saturable absorber (SA) to fiber laser cavity, the D-shape fiber coated with a SA material introduces more optical non-linearity and SA damage threshold is increased due to the evanescent field light-matter interaction. In this work, a D-shape fiber coated with aluminium-doped zinc oxide is used as a saturable absorber (SA). A Q-switched operation was obtained at 1559.6 nm. The pulsing was initiated at a low pump power of 25 mW and up to 198 mW, in which the pulses shortened from 6.67 µs to 2 µs and the repetition rate increased from 23.26 kHz to 83.9 kHz. The same technique was used to produce a nanosecond pulse mode-locked operation at 1564.8 nm, with pulse width and a repetition rate of 470 ns and 0.97 MHz, respectively. The laser produced a very stable Q-switching and mode-locking operations with a high signal to noise ratio of ~65 dB.
KW - Aluminium-doped zinc oxide
KW - D-shaped fiber
KW - Fiber laser
KW - Passive saturable absorber
UR - http://www.scopus.com/inward/record.url?scp=85109159743&partnerID=8YFLogxK
U2 - 10.1016/j.rio.2021.100057
DO - 10.1016/j.rio.2021.100057
M3 - Article
AN - SCOPUS:85109159743
SN - 2666-9501
VL - 3
JO - Results in Optics
JF - Results in Optics
M1 - 100057
ER -