Observation of synchronous nanosecond and femtosecond pulse propagation in a low-repetition-rate Er-doped fiber laser

Ying Qin; Guoqing Hu; Yue Zhao; Li Chen; Xiang Zhang; Hetian Li; Guangwei Chen; Xiaochun Liao; Peng Chen; Ya Liu; Huiyu Li; Zhiyong Zhang; Tengfei Wu; Zhehai Zhou; Jibo Han; Yu Bai

doi:10.1117/12.3036080

22 November 2024 Observation of synchronous nanosecond and femtosecond pulse propagation in a low-repetition-rate Er-doped fiber laser

Ying Qin, Guoqing Hu, Yue Zhao, Li Chen, Xiang Zhang, Hetian Li, Guangwei Chen, Xiaochun Liao, Peng Chen, Ya Liu, Huiyu Li, Zhiyong Zhang, Tengfei Wu, Zhehai Zhou, Jibo Han, Yu Bai

Author Affiliations +

Proceedings Volume 13246, Quantum and Nonlinear Optics XI; 132461D (2024) https://doi.org/10.1117/12.3036080
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China

Conference Poster

Abstract

Synchronous nanosecond and femtosecond pulses delivered from a low-repetition-rate Er-doped fiber laser mode-locked by nonlinear polarization evolution is experimentally proposed. Here, the repetition rate is set as ~4.5 MHz by introducing sufficiently long fiber in a ring cavity. By fully exploiting long fiber and anti-saturation absorption characteristics, it is experimentally observed that dissipative-soliton-resonance pulse with the nanosecond-level pulsewidth and femtosecond soliton pulse synchronously propagate in the same cavity. Besides, the pulsewidth of dissipative-soliton-resonance pulse and laser output power could be tailored by finely configuring the bidirectional pump powers. These results provide deep understanding of low-repetition-rate pulse laser and an intriguing way to obtain tunable dual-scale synchronous pulses, indicating the high potential for multiple-pulse laser processing and so on.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Ying Qin, Guoqing Hu, Yue Zhao, Li Chen, Xiang Zhang, Hetian Li, Guangwei Chen, Xiaochun Liao, Peng Chen, Ya Liu, Huiyu Li, Zhiyong Zhang, Tengfei Wu, Zhehai Zhou, Jibo Han, and Yu Bai "Observation of synchronous nanosecond and femtosecond pulse propagation in a low-repetition-rate Er-doped fiber laser", Proc. SPIE 13246, Quantum and Nonlinear Optics XI, 132461D (22 November 2024); https://doi.org/10.1117/12.3036080

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