TY - JOUR
T1 - Q-switched and mode-locked fiber laser based on organic metal 8-hydroxyquinoline chelate as saturable absorber at 1.5 µm
AU - Salam, Sameer
AU - Zhang, Pei
AU - Nizamani, Bilal
AU - Yasin, Moh
AU - Harun, Sulaiman Wadi
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/12
Y1 - 2022/12
N2 - This paper reports the demonstration of bis(8-hydroxyquinoline) calcium (CaQ2) as a passive saturable absorber (SA) in an erbium-doped fiber laser cavity. The SA has a saturation intensity of 511 MW/cm2 and a modulation depth of 14%. As the SA was incorporated into the cavity, a Q-switching was produced with a repetition rate and pulse duration ranging between 45.5 and 88.2 kHz and 8.76 to 2.9 µs, respectively. Then by increasing the cavity length, a soliton mode-locking operation was developed with a repetition rate and pulse duration of 1.82 MHz and 1.6 ps, respectively. Both lasers had a signal-to-noise ratio (SNR) higher than 63 dB and a central wavelength of 1561 nm. Our results suggest that CaQ2 has the potentials to act as a stable and good-performance SA. We believe that this work is the first to report CaQ2 as a functioning and promising SA.
AB - This paper reports the demonstration of bis(8-hydroxyquinoline) calcium (CaQ2) as a passive saturable absorber (SA) in an erbium-doped fiber laser cavity. The SA has a saturation intensity of 511 MW/cm2 and a modulation depth of 14%. As the SA was incorporated into the cavity, a Q-switching was produced with a repetition rate and pulse duration ranging between 45.5 and 88.2 kHz and 8.76 to 2.9 µs, respectively. Then by increasing the cavity length, a soliton mode-locking operation was developed with a repetition rate and pulse duration of 1.82 MHz and 1.6 ps, respectively. Both lasers had a signal-to-noise ratio (SNR) higher than 63 dB and a central wavelength of 1561 nm. Our results suggest that CaQ2 has the potentials to act as a stable and good-performance SA. We believe that this work is the first to report CaQ2 as a functioning and promising SA.
UR - http://www.scopus.com/inward/record.url?scp=85140014569&partnerID=8YFLogxK
U2 - 10.1016/j.infrared.2022.104388
DO - 10.1016/j.infrared.2022.104388
M3 - Article
AN - SCOPUS:85140014569
SN - 1350-4495
VL - 127
JO - Infrared Physics and Technology
JF - Infrared Physics and Technology
M1 - 104388
ER -