Wideband pulsed fiber lasers have been realized by using gold nanomaterials as saturable absorber (SAs). Compared to other morphologies, triangle gold nanoplates (TGNs) have multiple localized surface plasmon resonance peaks, which means that it can be used for construct wideband pulse laser. In this work, we propose and demonstrate an all-fiber passively Q-switched fiber laser at 1.56 μm by using TGNs as SA. The modulation depth and saturation intensity of the TGNs SA measured at 1560 nm are 7.1% and 13.8 MW cm⁻², respectively. By putting the TGN SA into the laser cavity pumped by a 980 nm laser diode, stable passively Q-switched laser at 1568 nm was achieved for a threshold pump power of 40 mW. The pulse duration decreases from 11.4 μs to 4.2 μs and the repetition rate increases from 12.5 kHz to 20 kHz with the increasing of the pump power from 40 mW to 75 mW. Our results indicate that the TGNs is a type of versatile broadband SA material for construct pulse lasers.

通过使用金纳米材料作为可饱和吸收体 (SA)，已经实现了宽带脉冲光纤激光器。与其他形态相比，三角形金纳米片（TGNs）具有多个局部表面等离子体共振峰，这意味着它可以用于构建宽带脉冲激光器。在这项工作中，我们通过使用 TGN 作为 SA ，提出并演示了 1.56 μm的全光纤被动调Q 光纤激光器。在 1560 nm 处测量的 TGNs SA 的调制深度和饱和强度分别为 7.1% 和 13.8 MW cm ^-2。通过将 TGN SA 放入由 980 nm 激光二极管泵浦的激光腔中，在 40 mW 的阈值泵浦功率下实现了 1568 nm 的稳定被动调Q激光器。脉冲持续时间从11.4降低μ s至4.2 μ随着泵浦功率从 40 mW 增加到 75 mW，重复率从 12.5 kHz 增加到 20 kHz。我们的结果表明 TGN 是一种用于构建脉冲激光器的通用宽带 SA 材料。