We review the most recent progress in ultralow-noise mode-locked fiber lasers and fiber-
based frequency-comb sources. With the rapid progress in theory, measurement, and …

Two-dimensional (2D) materials are crystals with one to a few layers of atoms and are being
used in many fields such as optical modulator, photodetector, optical switch, and ultrafast …

We report on a novel architecture for robust mode-locked femtosecond fiber lasers using a
nonlinear optical loop mirror with all polarization-maintaining fibers. Due to a nonreciprocal …

One-and two-dimensional forms of carbon, carbon nanotube, and graphene, and related 2D
materials, have attracted great attention of researchers in many fields for their interesting …

Precision time references in space are of major importance to satellite-based fundamental
science, global satellite navigation, earth observation, and satellite formation flying. Here we …

MXene as a novel two-dimensional (2D) material exhibits a lot of advantages in nonlinear
optics. However, the common MXene, Ti3C2Tx and Ti2CTx nanosheets, easily suffer from …

We present a flexible all-polarization-maintaining (PM) mode-locked ytterbium (Yb): fiber
laser based on a nonlinear amplifying loop mirror (NALM). In addition to providing detailed …

We demonstrate dual-comb spectroscopy in the vicinity of 2 µm wavelength based on a
single dual-wavelength dual-comb Thulium-doped fiber laser. The shared laser cavity …

We report a simple and compact design of a dispersion compensated mode-locked Yb: fiber
oscillator based on a nonlinear amplifying loop mirror (NALM). The fully polarization …

Imaging of biological cells and tissues with subcellular spatial resolution is important in
biology and medicine because it allows us to explore the dynamics of cells and to diagnose …