1 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China; 2 National Key Laboratory of Science and Technology on Space Microwave, China Aerospace Science and Technology, Xi'an 710100, China; 3 Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401120, China; 4 Jinan Institute of Quantum Technology, Jinan 250101, China
Abstract Nyquist pulses have wide applications in many areas, from electronics to optics. Mode-locked lasers are ideal platforms to generate such pulses. However, how to generate high-quality Nyquist pulses in mode-locked lasers remains elusive. We address this problem by managing different physical effects in mode-locked fiber lasers through extensive numerical simulations. We find that net dispersion, linear loss, gain and filter shaping can affect the quality of Nyquist pulses significantly. We also demonstrate that Nyquist pulses experience similariton shaping due to the nonlinear attractor effect in the gain medium. Our work may contribute to the design of Nyquist pulse sources and enrich the understanding of pulse shaping dynamics in mode-locked lasers.
(Ultrafast processes; optical pulse generation and pulse compression)
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11621404, 11561121003, 11727812, 61775059, 12074122, 62022033, and 11704123), Shanghai Rising-Star Program, the Sustainedly Supported Foundation by the National Key Laboratory of Science and Technology on Space Microwave (Grant No. HTKT2022KL504008), Shanghai Natural Science Foundation (Grant No. 23ZR1419000), and the National Key Laboratory Foundation of China (Grant No. 6142411196307).
Yuxuan Ren(任俞宣), Jinman Ge(葛锦蔓), Xiaojun Li(李小军), Junsong Peng(彭俊松), and Heping Zeng(曾和平) On the generation of high-quality Nyquist pulses in mode-locked fiber lasers 2024 Chin. Phys. B 33 034210
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Coherent optical frequency transfer via 972-km fiber link Xue Deng(邓雪), Xiang Zhang(张翔), Qi Zang(臧琦), Dong-Dong Jiao(焦东东), Dan Wang(王丹), Jie Liu(刘杰), Jing Gao(高静), Guan-Jun Xu (许冠军), Rui-Fang Dong(董瑞芳), Tao Liu(刘涛), and Shou-Gang Zhang(张首刚). Chin. Phys. B, 2024, 33(2): 020602.
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