137 citations · 401 across the 11 of their papers we have counts for
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Collision-induced Hopf-type bifurcation reversible transitions in a dual-wavelength femtosecond fiber laser
Runmin Liu, Defeng Zou, Shuang Niu +2
Collision refers to a striking nonlinear interaction in dissipative systems, revealing the particle-like properties of solitons. In dual-wavelength mode-locked fiber lasers, collis…
Chaotic internal dynamics of dissipative optical soliton molecules
Youjian Song, Defeng Zou, Omri Gat +2
When a laser cavity supports the propagation of several ultrashort pulses, these pulses interact and can form compact bound states called soliton molecules. Soliton molecules are f…
Narrow-linewidth optical frequency comb reference to a fiber delay line
Haochen Tian, Fei Meng, Baike Lin +4
In this letter, we derive a fully-stabilized narrow-linewidth optical frequency comb (OFC) reference to a kilometer-long fiber delay line for the first time, to the best of our kno…
Spontaneous emission noise in mode-locked lasers and frequency combs
Ruoyu Liao, Chao Mei, Youjian Song +2
Amplified spontaneous emission (ASE) causes fluctuations of pulse energy, of the optical phase and of the timing of the pulse intensity envelope in a mode-locked laser or frequency…
Power spectral density analysis of relative comb-line phase jitter in a twin-soliton molecule
Haochen Tian, Defeng Zou, Youjian Song +1
Investigation on the relative phase evolution between two bounded optical solitons is essential for its potential applications in development of larger telecommunication capacity o…
XPM-forced frequency-oscillating soliton in mode-locked fiber laser
Yudong Cui, Yusheng Zhang, Yunyun Xiang +2
Cross phase modulation (XPM) could induce soliton trapping in nonlinear medium, which has been employed to achieve vector soliton, optical switching and optical analog of gravity-l…
Sub-20-Attosecond Timing Jitter Mode-Locked Fiber Lasers
Hyoji Kim, Peng Qin, Youjian Song +6
We demonstrate 14.3-attosecond timing jitter [integrated from 10 kHz to 94 MHz offset frequency] optical pulse trains from 188-MHz repetition-rate mode-locked Yb-fiber lasers. In o…
Sub-100-as timing jitter optical pulse trains from mode-locked Er-fiber lasers
Tae Keun Kim, Youjian Song, Kwangyun Jung +4
We demonstrate sub-100-attosecond timing jitter optical pulse trains generated from free-running, 77.6-MHz repetition-rate, mode-locked Er-fiber lasers. At -0.002(\pm0.001) ps2 net…
Timing jitter optimization of mode-locked Yb-fiber lasers toward the attosecond regime
Youjian Song, Chur Kim, Kwangyun Jung +2
We demonstrate ultra-low timing jitter optical pulse trains from free- running, 80 MHz repetition rate, mode-locked Yb-fiber lasers. Timing jitter of various mode-locking condition…
Impact of pulse dynamics on timing jitter in mode-locked fiber lasers
Youjian Song, Kwangyun Jung, Jungwon Kim
We investigate the high-frequency timing jitter spectral density of mode-locked fiber lasers in different mode-locked regimes. Quantum noise-limited timing jitter spectra of mode-l…