Sun Dalin, Zhao Qi, Chu Shaowen, Cao Chunyu, Pei Jihong, Xu Xintong, Ruan Shuangchen
College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China.
Shenzhen Technology University Hospital, Shenzhen 518118, China.
Micromachines (Basel). 2023 Jul 29;14(8):1528. doi: 10.3390/mi14081528.
The bound state soliton pulse, a novel mode-locked output state of fiber lasers, has been studied extensively to gain a better understanding of soliton interactions and to explain the mechanism behind the generation of mode-locked pulses. In this particular research, we utilized a self-made saturable absorber (SA) consisting of single-walled carbon nanotubes (SWCNT) in a fully polarization maintaining (PM) erbium-doped fiber optical path. Through this setup, we observed various bound state pulse phenomena, including the double bound state with different phase differences, the bound state formed by two double pulse bound states, the multi-pulse bound state, etc. The abundant bound soliton pulse states demonstrated the excellent nonlinear absorption characteristics of the SA as well as the excellent optical properties of the all-PM fiber laser. It contributed to exploring the relationship between sub pulses and mode-locked pulses in the future. Additionally, due to the strong interaction between bound state solitons and the inherent stability of the PM optical path, there was potential for utilizing this setup as a seed source to enhance the stability of high-power fiber lasers.
束缚态孤子脉冲作为光纤激光器一种新型的锁模输出状态，已被广泛研究，以更好地理解孤子相互作用，并解释锁模脉冲产生背后的机制。在这项具体研究中，我们在全保偏掺铒光纤光路中使用了由单壁碳纳米管（SWCNT）构成的自制饱和吸收体（SA）。通过该装置，我们观察到了各种束缚态脉冲现象，包括具有不同相位差的双束缚态、由两个双脉冲束缚态形成的束缚态、多脉冲束缚态等。丰富的束缚孤子脉冲状态展示了SA优异的非线性吸收特性以及全保偏光纤激光器出色的光学性能。这有助于未来探索子脉冲与锁模脉冲之间的关系。此外，由于束缚态孤子之间的强相互作用以及保偏光路固有的稳定性，利用该装置作为种子源来提高高功率光纤激光器的稳定性具有潜力。
