A5018985577- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Laser-Matter Interactions and Applications
- Advanced Fiber Optic Sensors
- Nonlinear Waves and Solitons
- Advanced Mathematical Physics Problems
- Optical Network Technologies
- Nonlinear Photonic Systems
- Solid State Laser Technologies
- Laser Applications in Dentistry and Medicine
Beijing University of Technology
2020-2022
Conventional soliton (CS) and noise-like pulse (NLP) are two different kinds of regimes in ultrafast fiber lasers, which have many intense applications. In this article, we experimentally demonstrate that the regime an Er-doped laser could be converted between conventional by using fast response saturable absorbers (SA) made from layers single-wall carbon nanotubes (CNT). For monolayer (ML) CNT-SA, CS with duration 439 fs at 1560 nm is achieved while for bilayer (BL) CNT, NLP a 1.75 ps spike...
Noise-like pulses having a pedestal of 690 fs and spike 59.6 were generated in nonlinear Yb-doped fiber amplification system. The seed source is mode-locked laser by polarization rotation, dissipative soliton obtained it. Then, the passed through 7.6 m dispersive to enhance dispersion nonlinearity. Further on, launched into amplifier, stable noise-like with 6.26 ps 227 achieved. Finally, grating pair, effectively compressed fs, respectively. To best our knowledge, this shortest demonstrated...
We demonstrated an Yb-doped mode-locked fiber laser system delivering both dissipative-soliton-resonance (DSR) and noise-like pulse (NLP) simultaneously. The widths of DSR NLP were 7.1 ns 4.3 ns, respectively. Meanwhile, the spectrum at 1056 nm 0.5 21.5 nm, In this dual mode-locking state operation, intracavity powers (DSR, NLP) increased 24% 41% compared to that in single states pump power 600 mW, To best our knowledge, it is first time trigger simultaneously by sharing one a system.
The dispersive Fourier transform technique provides feasibility of exploring non-repetitive events and the buildup process in ultrafast lasers. In this paper, we report a new dissipative solitons simplified mode-locked Yb-doped fiber laser, which includes more complex physics stages such as Q-switching stage, raised damped relaxation oscillation stages, noise-like successive soliton explosions breathing stage. Complete evolution dynamics pulse double are also investigated with transform. For...
We numerically demonstrated six types of pulses in an Yb-doped fiber laser, including dissipative soliton (DS), resonance (DSR), multipulse, noise-like pulse (NLP), breathing and explosion. The influence cavity conditions on DSR properties is discussed systematically. It found that the change saturation power saturable absorber (SA) could transform into various pulses. Saturation SA injected signal affect number shape multipulse. Furthermore, intra-cavity dispersion type diagrammed...
We demonstrated the noise-like pulse (NLP) generation in an erbium (Er) doped fiber laser at 1560 nm based on 2HMoTe<sub>2</sub>. The saturable absorber (SA) was a film mixed by 2H-MoTe2 and polyvinyl alcohol (PVA). moudulation depth of SA 21.4% optical intensity 10.3 GW/cm<sup>2</sup>. When 2H-MoTe<sub>2</sub> inserted into cavity, stable NLPs with 3-dB spectral bandwidth 2.44 repetition rate 33.7 MHz were obtained. autocorrelation (AC) trace NLP has 1.14 ps spike 71 pedestal. pump power...
Q-switched Yb-doped fiber lasers based on 2H-MoTe<sub>2</sub> was demonstrated in this paper. The saturable absorber (SA) a film mixed by and polyvinyl alcohol (PVA). modulation depth of the SA 21.4% optical intensity 10.3 GW/cm<sup>-2</sup>. When inserted into cavity, pulses were obtained. To best our knowledge, is first time to realize generation Q-switching laser 2H-MoTe<sub>2-</sub>PVA film.