A5101448058- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Laser-Matter Interactions and Applications
- Advanced Fiber Optic Sensors
- Solid State Laser Technologies
- Mechanical and Optical Resonators
- solar cell performance optimization
- Acoustic Wave Resonator Technologies
- Electrowetting and Microfluidic Technologies
- GaN-based semiconductor devices and materials
- Laser Applications in Dentistry and Medicine
- Gas Sensing Nanomaterials and Sensors
Beijing University of Technology
2019-2023
Peking University
2023
National Yang Ming Chiao Tung University
2012
We demonstrate the compression of noise-like pulses in an Yb-doped fiber master-oscillator power-amplifier (MOPA). The seed source MOPA is NPR mode locked laser delivering 5.94-ps dissipative soliton with a repetition rate 37.48 MHz. After amplification amplifier, stable maximum power 5 W are obtained. Subsequently grating pair used to tailor spectrum and compensate dispersion amplified pulses. pedestal de-convolution autocorrelation trace compressed from 6.5 ps 920 fs. To best our...
Abstract We demonstrated a harmonic mode-locked Erbium-doped fiber laser based on saturable absorber (SA) of 2H-MoTe 2 , which is member the transition metal dichalcogenides. The SA mode-locker was made by integrating into D-shaped fiber, and then inserted an erbium-doped for mode-locking. nonlinear modulation depth saturation power -based were 10.9% 19 MW cm −2 respectively. fundamentally pulse train had width 577 fs repetition rate 14.32 MHz. highest order mode locking 55th, 787.6 MHz, 820...
In this paper, we demonstrate experimentally a thulium-doped passively mode-locked figure-of-eight fiber laser to generate dissipative-soliton-resonance (DSR) pulses in an all-anomalous-dispersion regime. And two different DSR are obtained by simply adjusting the polarization controllers. At maximum pump power of 2.4 W, average and repetition rate is 113.5 mW 2.532 MHz respectively, corresponding pulse energy 45 nJ. Subsequently, effect NALM length on investigated, with 63 nJ near 2 μm obtained.
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...
Abstract We demonstrated two different types of bound noise-like pulses (NLPs) in ytterbium-doped mode-locked fiber lasers using the nonlinear polarization rotation technique. In anomalous dispersion area, there were multiple spikes intensity autocorrelation (IAC) trace. normal spike presented only center IAC The results experiment show that state NLPs may have partial coherence.
We demonstrate the coherent stacking of 64 femtosecond pulses from a chirp-pulse amplification laser system based on an ytterbium-doped fiber amplifier. It combines into 1.2 mJ pulse energy at 5 kHz repetition rate.
We demonstrate a self-started, long-term stable polarization-maintaining mode-locked fiber laser based on the nonlinear polarization evolution technique. A polarized beam splitter is inserted into cavity of linear to facilitate self-started mode-locking. Pulses with single pulse energy 26.9 nJ and average output power 73.9 mW are obtained at pump 600 mW. The transmission characteristics artificial saturable absorber used in this analyzed theoretically, influence half-wave plate state...
Abstract We present a dispersion-managed mode-locked ytterbium fibre laser based on the nonlinear polarization evolution technique. Four single-pulse states could be generated by changing group delay dispersion values from anomalous (−0.0038 ps 2 ) to normal (0.051 with grating pair. In regime, pulse width was gradually decreased decrease of net dispersion. region, typical soliton obtained, which time-bandwidth product calculated as 0.526. addition, dynamics four were also investigated using...
The rectangular noise-like pulse (NLP) and dissipative soliton resonance (DSR) were generated in a thulium-doped fiber laser based on nonlinear optical loop mirror (NOLM). NLP DSR pulses could be switched the by properly manipulating intracavitary polarization controller (PC). two different states are investigated using spectrum radio frequency spectrum. center wavelength of is 1930.11 nm with 3-dB bandwidth 12.19 nm, aforesaid parameters 1944.04 10.36 respectively. has sub-peaks obviously,...
A stable Yb doped pulsed fiber nonlinear amplifier are demonstrated. noise like pulse with the width of 84 fs is generated after compressing by grating pair. The peak power 12 kW and signal-to-noise ratio RF spectrum over 80 dB. This experiment expected to be applied in imaging other fields.