Yang Xueyu, Tao Jianing, Lv Chenyue, Fu Chaohui, Lu Baole, Bai Jintao
Opt Express. 2023 Nov 6;31(23):37537-37548. doi: 10.1364/OE.503499.
We experimentally and numerically demonstrate the all-normal dispersion (ANDi) ytterbium (Yb)-doped fiber laser based on nonlinear amplifying loop mirror (NALM) mode-locked, which allows tunable single-wavelength and dual-wavelength outputs. The pulses tuning ranges of the dual-wavelength are from 1032.24 nm to 1053.13 nm and from 1047.94 nm to 1069.05 nm, and the repetition frequency difference varies from 1766Hz to 1834Hz. To our knowledge, this is the widest dual-wavelength tuning range of Yb-doped fiber lasers based on NALM mode-locked. We test for 90 minutes and have high stability in both single-wavelength and dual-wavelength. In addition, the pulsed collision dynamics between two solitons at different wavelengths are numerically studied. Numerical results show that during the pulse collision, the two solitons pass through each other and maintain their properties, which also confirms the particle nature of the isolated wave. Our research contributes to the dynamics of dual-wavelength solitons collision in NALM mode-locked fiber laser and provides what we believe to be is a new idea for tunable Yb-doped dual-comb sources.
我们通过实验和数值模拟证明了基于非线性放大环形镜（NALM）锁模的全正色散（ANDi）掺镱（Yb）光纤激光器，该激光器可实现可调谐单波长和双波长输出。双波长的脉冲调谐范围为1032.24 nm至1053.13 nm以及1047.94 nm至1069.05 nm，重复频率差在1766Hz至1834Hz之间变化。据我们所知，这是基于NALM锁模的掺镱光纤激光器中最宽的双波长调谐范围。我们进行了90分钟的测试，单波长和双波长均具有高稳定性。此外，对不同波长的两个孤子之间的脉冲碰撞动力学进行了数值研究。数值结果表明，在脉冲碰撞过程中，两个孤子相互穿过并保持其特性，这也证实了孤立波的粒子性质。我们的研究有助于NALM锁模光纤激光器中双波长孤子碰撞的动力学研究，并为可调谐掺镱双梳源提供了我们认为的新思路。
