Coexistence of dissipative soliton and stretched pulse in dual-wavelength mode-locked Tm-doped fiber laser with strong third-order dispersion

Abstract

Mode-locked lasers with strong high order dispersion exhibit rich nonlinear dynamics. Here we numerically and experimentally demonstrate coexistence of dissipative soliton (DS) and stretched pulse (SP) in a dual-wavelength mode-locked Tm-doped fiber laser with strong third-order dispersion (TOD), where the DS and SP show completely different pulse duration and peak power. Wavelength-dependent feature of the net cavity group-velocity dispersion (GVD) leaded by the strong TOD plays a key role for the coexistence patterns. To our best knowledge, this is the first demonstration of the coexistence of different mode-locked pulse regimes with strong laser cavity TOD.

Recent research and advances of material-based saturable absorber in mode-locked fiber laser

“…Next, dual-wavelength MLFL in the similar band was demonstrated in 1530 and 1545 nm with the adjustment of cavity chromatic dispersion [259], 1532 and 1555 nm with birefringence filtering effect [255], 1533 and 1558 nm by using polarization beam splitter [75], as well as 1956.8 and 1979.2 nm by adjustment of pump power and PC orientation [256]. In addition, the adjustment of pump power and PC in the laser cavity also generates simultaneous dissipative soliton and soliton pulses at 1923.6 nm and 1997.4 nm, respectively [260]. Moreover, a dual-band MLFL was achieved by sharing gain fiber, Tm 3+ :ZBLAN fiber at the emission wavelength of 1480 nm and 1845 nm [132].…”

Switchable noise-like square pulses generation at 1.61 μm with a record output power

“…Obtaining different types of pulses from one fiber laser is always a hot topic. 18,[23][24][25] Switchable generation of NLSPs and DSR square pulses also had been observed. 18,23) At present, no reports demonstrate generation of two different kinds of NLSP states in one fiber laser.…”

Design of Ultra Large Normal Dispersion ZBLAN Photonic Crystal Fiber and Its Application in Mid-IR Ultra Short Fiber Lasers

“…The simulation starts with an arbitrary weak signal, and ends with a self-consistent optical field. When we increase the value of Es, the pulse first becomes narrower with an increased peak power and finally breaks due to the pulse splitting effect [31]. Under the critical condition of pulse splitting, i.e., Es = 101 pJ without PCF and Es = 89 pJ with PCF, the pulse duration reaches its narrowest level.…”