The quest towards the integration of ultra-fast, high-precision optical clocks is reflected in the
large number of high-impact papers on the topic published in the last few years. This interest …

Nonlinear photonic chips can generate and process signals all-optically with far superior
performance to that possible electronically—particularly with respect to speed. Although …

Dissipative solitons are localized formations of an electromagnetic field that are balanced
through an energy exchange with the environment in presence of nonlinearity, dispersion …

Optical frequency combs,, provide equidistant frequency markers in the infrared, visible and
ultraviolet,, and can be used to link an unknown optical frequency to a radio or microwave …

We demonstrate a novel mode locked ultrafast laser, based on an integrated high-Q
microring resonator. Our scheme exhibits stable operation of two slightly shifted spectral …

Ultrashort pulsed lasers, operating through the phenomenon of mode-locking, have had a
significant role in many facets of our society for 50 years, for example, in the way we …

Dark solitons feature local dips on a modulationally stable continuous-wave background.
Compared with bright solitons, the dark solitons in fiber lasers are more stable in noise …

Tungsten disulfide (WS_2) is a type of anisotropic-layered compound and has broadband
saturable absorption features as saturable absorbers (SAs). With WS_2-based SAs, dark …

Simultaneous Kerr comb formation and second-harmonic generation with on-chip
microresonators can greatly facilitate comb self-referencing for optical clocks and frequency …

We report on the dark pulse emission of an all-normal dispersion erbium-doped fiber laser
with a polarizer in cavity. We found experimentally that apart from the bright pulse emission …