The laser-induced damage threshold (LIDT) of optical elements is a critical limitation in advancing next-generation spaceborne laser technologies. Transient mechanisms in multiple-pulse damage dynamics have been recognized, but si

Within the realm of soft matter, particularly liquid crystals, the ability to leverage material properties to create switchable diffraction gratings holds significant importance in disciplines such as optics and information scienc

Lithium tetraborate (LB4) is a lithium borate compound known for its exceptional linear and nonlinear optical properties, including a wide transparency range (0.16–3.5 μm) and high Raman gain. Here, a millimeter-sized LB4 whisperi

Fringe projection profilometry (FPP) is a method that determines height by analyzing distortional fringes, which is widely used in high-accuracy 3D imaging. Now, one major reason limiting imaging speed in FPP is the projection dev

The rapid development of topological photonics has significantly facilitated the development of novel microwave and optical devices with richer electromagnetic properties. A stable and efficient guided wave is a necessary conditio

In this work, we demonstrate a π-phase-shifted tilted fiber Bragg grating (π-PSTFBG)-based sensor for measuring the refractive index (RI) of NaCl solutions, achieving a real-time and online measurement system by employing a densel

A tightly synchronized fiber laser system composed of two mode-locked Yb-doped fiber lasers in a master-slave configuration is built. The synchronization could sustain for more than 6 h, and the maximum tolerance of cavity length

We propose an approach for generating the enhanced superchiral needle by matching electromagnetic components of the combined field, which is the superposition of a radially polarized vortex Bessel–Gaussian beam (RPVBGB) and an azi

The technique of imaging or tracking objects outside the field of view (FOV) through a reflective relay surface, usually called non-line-of-sight (NLOS) imaging, has been a popular research topic in recent years. Although NLOS ima

Topological photonics provides a strategy that makes light transmission immune to structural-defects-induced backward scattering. Leveraging this, topological negative refraction enables robust, reflectionless light deflection, bu