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  • Received: Dec. 23, 2019

    Accepted: Feb. 18, 2020

    Posted: Apr. 30, 2020

    Published Online: Apr. 30, 2020

    The Author Email: Shuangchen Ruan (scruan@sztu.edu.cn)

    DOI: 10.1017/hpl.2020.7

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    Meng Wang, Yijian Huang, Zongpeng Song, Jincheng Wei, Jihong Pei, Shuangchen Ruan. Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse[J]. High Power Laser Science and Engineering, 2020, 8(2): 02000e14

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High Power Laser Science and Engineering, Vol. 8, Issue 2, 02000e14 (2020)

Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse

Meng Wang1,2,3, Yijian Huang4, Zongpeng Song1,2,3, Jincheng Wei3, Jihong Pei1, and Shuangchen Ruan1,2,3,†

Author Affiliations

  • 1Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, Shenzhen Technology University, Shenzhen 518118, China
  • 2College of Electronic Information Engineering, Shenzhen University, Shenzhen 518060, China
  • 3Shenzhen Key Laboratory of Laser Engineering, Shenzhen University, Shenzhen 518060, China
  • 4Key Laboratory of Optoelectronic Devices and System of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China

Abstract

We report on mode-locked thulium-doped fiber lasers with high-energy nanosecond pulses, relying on the transmission in a semiconductor saturable absorber (SESA) and a carbon nanotube (CNTs-PVA) film separately. A section of an SMF–MMF–SMF structure multimode interferometer with a transmission peak wavelength of ~2003 nm was used as a wavelength selector to fix the laser wavelength. When the SESA acted as a saturable absorber (SA), the mode-locked fiber laser had a maximum output power of ~461 mW with a pulse energy of ~0.14 μJ and a pulse duration of ~9.14 ns. In a CNT-film-based mode-locked fiber laser, stable mode-locked pulses with the maximum output power of ~46 mW, pulse energy of ~26.8 nJ and pulse duration of ~9.3 ns were obtained. To the best of our knowledge, our experiments demonstrated the first 2 μm region ‘real’ SA-based dissipative soliton resonance with the highest mode-locked pulse energy from a ‘real’ SA-based all-fiberized resonator.

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