High-power dissipative solitons from an all-normal dispersion erbium fiber oscillator

Abstract

We demonstrate output pulse energies of 20 nJ from an erbium-doped fiber oscillator that contains only positive dispersion fibers and is mode locked by use of nonlinear polarization evolution and stabilized with a birefringent filter. The fiber oscillator operates at a repetition rate of 3.5 MHz with a central wavelength of 1550 nm. The positively chirped output pulses have a duration of 53 ps and are compressed to 750 fs. The large positive chirp of the output pulses and the steep side edges of the pulse spectrum indicate dissipative soliton operation.

All-fiber normal-dispersion single-polarization passively mode-locked laser based on a 45°-tilted fiber grating

“…In all-normal dispersion region, the positive linear chirp prevents the generation of a nonmonotonic chirp [32]. When the nonlinear phase is strong enough to conquer the linear chirp, dissipative solitons will break.…”

Spectral focusing dual-comb coherent anti-Stokes Raman spectroscopic imaging

“…Additionally, our method allows intrinsically feasible tunability of Stokes pulse based on the soliton self-frequency shift, and we can obtain fingerprint vibrational signatures over a large spectral range (800-2200 cm -1 ), while the long wavelengths of both light sources are very attractive for deep tissue imaging. High-power soliton-induced supercontinuum generation can benefit further applications in biology and materials [40]. Advanced phase-controlled scheme have recently emerged, and we believe that their combination with our method will deliver techniques with improved performance and utility [34,41].…”

31 nJ sub-200 fs pulse generation from an Erbium-doped fiber amplifier similariton oscillator

“…The temporal width (FWHM), peak power (after considering the 70% loss of the grating compressor), and pulse compression efficiency of the grating-pair-compressed pulse [ Fig. 3(f)] were 191 fs, 40 kW, and 90%, substantially better than those (750 fs, 5 kW, 56%) reported in [4]. We also adjusted the four wave-plates and the separation between the blades to get the broadest spectrum at the cost of reduced pulse energy (21 nJ).…”

“…Nevertheless, the longer lasing wavelength of EDF lasers is attractive in telecommunications, in vivo three-photon microscopy [2], and mid-infrared pulse generation [3]. The highest energy of sub-picosecond pulse from similariton or dissipative soliton EDF oscillators was 20 nJ (750 fs, 1.2 W pump) [4], where a short (59 cm) EDF and long (57 m) passive fibers were used to suppress the nonlinear chirp via strong normal dispersion. However, the grating-pair-compressed pulse still exhibited a highly oscillating tail with poor (56%) compression efficiency (defined as the energy in the temporal main lobe over the total energy) [5].…”