NbSe<sub>2</sub> nanoparticles mode-locked 2 μm thulium fiber laser

Liu Xinxing; Tian Zhen; Tang Yulong

doi:10.11884/HPLPB202032.190458

Volume 32 Issue 1

Dec. 2019

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Liu Xinxing, Tian Zhen, Tang Yulong. NbSe2 nanoparticles mode-locked 2 μm thulium fiber laser[J]. High Power Laser and Particle Beams, 2020, 32: 011013. doi: 10.11884/HPLPB202032.190458

Citation:

Liu Xinxing, Tian Zhen, Tang Yulong. NbSe₂ nanoparticles mode-locked 2 μm thulium fiber laser[J]. High Power Laser and Particle Beams, 2020, 32: 011013. doi: 10.11884/HPLPB202032.190458

Liu Xinxing, Tian Zhen, Tang Yulong. NbSe2 nanoparticles mode-locked 2 μm thulium fiber laser[J]. High Power Laser and Particle Beams, 2020, 32: 011013. doi: 10.11884/HPLPB202032.190458

Citation:

Liu Xinxing, Tian Zhen, Tang Yulong. NbSe₂ nanoparticles mode-locked 2 μm thulium fiber laser[J]. High Power Laser and Particle Beams, 2020, 32: 011013. doi: 10.11884/HPLPB202032.190458

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NbSe₂ nanoparticles mode-locked 2 μm thulium fiber laser

doi: 10.11884/HPLPB202032.190458

Liu Xinxing^{1, 2
,},
Tian Zhen³,
Tang Yulong^{1, 2
,
,}

1.
Key Laboratory for Laser Plasmas (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
2.
Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China
3.
Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China

Received Date: 2019-11-23
Rev Recd Date: 2019-12-30
Publish Date: 2019-12-26

Abstract

Abstract

High-repetition-rate laser pulses with large pulse energies have great application potential in various areas including telecommunications, sensing, material processing, etc. Here, we report the linear and nonlinear optical properties of solution-based transition-metal dichalcogenide NbSe₂ nanoparticles, and at the same time its application to mode-locked 2 μm fiber laser. The linear absorption of the NbSe₂ nanoparticles covers the near-infrared to the near mid-infrared regions, and decreases with increasing wavelength, showing a broadband operation potential. Nonlinear absorption measurement of the NbSe₂ nanoparticle gives a modulation depth of 6.5% and saturable intensity of 19 MW·cm⁻² at the wavelength of about 2 μm. The the NbSe₂ nanoparticles were transferred onto a gold mirror to fabricate a saturable absorber, with which a mode-locked thulium fiber laser was constructed and harmonic mode-locking was achieved. The mode-locked laser provides pulse energy of 3.36 nJ, pulse duration of 1.48 ns and repetition rate of 50.66 MHz. The laser wavelength is centered at 1 910.8 nm with a spectral bandwidth of 5.8 nm. The realization of dissipative-soliton mode-locking in the 2 μm fiber laser with NbSe₂ nanoparticles proves that NbSe₂ nanoparticles are good modulators for pulse generation in the 2 μm spectral region, and the integratable solution based nanoparticles hvae the potential of being new broadband nonlinear light modulators.
- fiber laser,
- saturable absorber,
- mode-locking,
- dissipative soliton,
- nanoparticle

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References(28)

References

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