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Chin. Phys. B, 2026, Vol. 35(4): 044201    DOI: 10.1088/1674-1056/ae063c
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Dissipative soliton operation in a mode-locked laser based on thulium-doped fiber

Wen-Yan Zhang(张文艳)1, Lei Zheng(郑磊)1, Tian Zhang(张添)1, Nan-Nan Liu(刘楠楠)1, Li-Jie Geng(耿利杰)1, Kun Yang(杨坤)1,†, and Li Zhan(詹黎)2
1 School of Electronics and Information, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
2 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
Abstract  We report a dissipative soliton laser utilizing thulium-doped fiber as the saturable absorber. By adjusting the polarization controller and pump power, a stable fundamental dissipative pulse has been successfully achieved, featuring a center wavelength of 1565.88 nm, a 3-dB bandwidth of 1.20 nm, a repetition frequency of 36.9 MHz, and a signal-to-noise ratio of 64 dB. Combined the gradual increase of the pump power with the intracavity polarization optimization, the spectral morphology evolves into a parabolic shape, $\Pi$-shape, and M-shape. Moreover, through increasing the gain, multiple dissipative pulses include dissipative soliton pairs and triples are manifested because of the peak power clamping effect. The repetition frequencies are 73.8 MHz and 110.7 MHz, respectively, with signal-to-noise ratios both more than 60 dB, indicating that the constructed dissipative soliton laser has excellent stability. This study not only enhances the understanding of the nonlinear dynamic process of dissipative soliton generation, but also offers a novel approach for designing ultrafast lasers characterized by high stability and an all-fiber structure.
Keywords:  mode-locked fiber laser      thulium-doped fiber      pulsed laser      dissipative soliton  
Received:  16 July 2025      Revised:  28 August 2025      Accepted manuscript online:  12 September 2025
PACS:  42.55.Wd (Fiber lasers)  
  42.65.Tg (Optical solitons; nonlinear guided waves)  
  42.60.-v (Laser optical systems: design and operation)  
  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 62105296 and 62305209), the Key Research and Development Projects of Henan Province, China (Grant No. 241111212600), the Henan Provincial Science and Technology Research Project (Grant Nos. 252102220036 and 242102210145), the Key Research Project of Higher Education Institutions of Henan Province, China (Grant No. 26A510020), and the Youth Backbone Project of Zhengzhou University of Light Industry.
Corresponding Authors:  Kun Yang     E-mail:  yangkun@zzuli.edu.cn

Cite this article: 

Wen-Yan Zhang(张文艳), Lei Zheng(郑磊), Tian Zhang(张添), Nan-Nan Liu(刘楠楠), Li-Jie Geng(耿利杰), Kun Yang(杨坤), and Li Zhan(詹黎) Dissipative soliton operation in a mode-locked laser based on thulium-doped fiber 2026 Chin. Phys. B 35 044201

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