TY - JOUR
T1 - Silver Nanoplate Composites as Nonlinear Saturable Absorbers for a Q-Switched Laser
AU - Lyu, Wenhao
AU - Cheng, Yuan
AU - An, Jiayi
AU - Condorelli, Marcello
AU - Pulvirenti, Mario
AU - Compagnini, Giuseppe
AU - Wang, Xiaogang
AU - Fu, Bo
AU - Scardaci, Vittorio
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/11/7
Y1 - 2022/11/7
N2 - Metal nanomaterials have promising applications in ultrafast photonics due to their broad-band operation, large third-order nonlinear susceptibility, and ultrafast recovery time. We realized a Q-switched pulsed erbium-doped fiber laser based on a silver nanoplate polyvinyl alcohol film as a saturable absorber. This film, with a modulation depth of 15.7%, was integrated into a fiber laser by means of a sandwich structure. We obtained Q-switched pulses in the 1.5-µm band, which plays an important role in telecommunications and atmospheric detection. Stable Q-switched pulses were obtained at the pump power of 135 mW, with a single pulse energy of 33.8 nJ, a pulse width of 2.3 µs, a repetition rate of 62.4 kHz, and a signal-to-noise ratio of about 45 dB. When increasing the pump power up to a maximum value of 246 mW, the maximum single pulse energy of 57.8 nJ was achieved. This study first demonstrates the potential of silver nanoplates as saturable absorbers in generating stable laser pulses with high energy.
AB - Metal nanomaterials have promising applications in ultrafast photonics due to their broad-band operation, large third-order nonlinear susceptibility, and ultrafast recovery time. We realized a Q-switched pulsed erbium-doped fiber laser based on a silver nanoplate polyvinyl alcohol film as a saturable absorber. This film, with a modulation depth of 15.7%, was integrated into a fiber laser by means of a sandwich structure. We obtained Q-switched pulses in the 1.5-µm band, which plays an important role in telecommunications and atmospheric detection. Stable Q-switched pulses were obtained at the pump power of 135 mW, with a single pulse energy of 33.8 nJ, a pulse width of 2.3 µs, a repetition rate of 62.4 kHz, and a signal-to-noise ratio of about 45 dB. When increasing the pump power up to a maximum value of 246 mW, the maximum single pulse energy of 57.8 nJ was achieved. This study first demonstrates the potential of silver nanoplates as saturable absorbers in generating stable laser pulses with high energy.
KW - Q-switched laser
KW - erbium-doped fiber laser
KW - saturable absorber
KW - silver nanoplates
UR - https://www.scopus.com/pages/publications/85146598126
U2 - 10.3390/photonics9110835
DO - 10.3390/photonics9110835
M3 - 文章
AN - SCOPUS:85146598126
SN - 2304-6732
VL - 9
JO - Photonics
JF - Photonics
IS - 11
M1 - 835
ER -