期刊
OPTICS COMMUNICATIONS
卷 545, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optcom.2023.129632
关键词
Nonlinear multimode interference; Harmonic mode-locked; Integrated photonic devices; High repetition-rate pulses
类别
This paper proposes a harmonic mode-locked fiber laser based on a novel highly nonlinear hybrid multimode interference saturable absorber (SA). Through numerical simulations, it is shown that the stability of nonlinear multimode interference mode-locking can be improved by using a tapered graded-index multimode fiber (TA-GIMF) to filter higher-order transverse modes. The combination of TA-GIMF and Bi2Te3 enhances the nonlinear saturation absorption properties and nonlinear coefficients in the laser cavity, resulting in a repetition rate of 2.11 GHz, which is the highest achieved based on the NL-MMI effect and provides new insights into high repetition-rate mode-locked fiber lasers.
This paper proposes a harmonic mode-locked fiber laser based on a novel highly nonlinear hybrid multimode interference saturable absorber (SA). The hybrid multimode interference SA is integrated by tapered graded -index multimode fiber (TA-GIMF) and Bi2Te3. The numerical simulation results show that TA-GIMF can improve the stability of nonlinear multimode interference mode-locking by filtering higher-order transverse modes. In addition, the larger evanescent-wave fields generated by TA-GIMF are more beneficial to the light- matter interaction. By depositing Bi2Te3 on TA-GIMF, the nonlinear saturation absorption properties and nonlinear coefficients in the laser cavity are further improved. Based on the hybrid multimode interference SA, the repetition rate of the fiber laser reached 2.11 GHz, corresponding to the 30th harmonic of the fundamental repetition rate of 70.41 MHz. Our results are the highest repetition rate generated based on the NL-MMI effect and provide novel insights into implementing highly integrated, high repetition-rate mode-locked fiber lasers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据