Recent research in topological photonics has not only proposed and realized novel
topological phenomena such as one‐way broadband propagation and robust transport of …

Photonic metasurface, a 2D array of plasmonic or dielectric optical meta-atoms, provides a
versatile and compact platform for manipulating the polarization, phase and amplitude of …

Structured light provides an additional degree of freedom for modern optics and practical
applications. The effective generation of orbital angular momentum (OAM) lasing, especially …

Manipulating the properties of the isofrequency contours (IFCs) of materials provides a
powerful means of controlling the interaction between light and matter. Hyperbolic …

Weyl points are the crossings of linearly dispersing energy bands of three-dimensional
crystals, providing the opportunity to explore a variety of intriguing phenomena such as …

Valleytronics is quickly emerging as an exciting field in fundamental and applied research.
In this Letter, we study the acoustic version of valley states in sonic crystals and reveal a …

Spin‐controlled vortex generation and spin‐Hall effect, two distinct effects discovered in
optics, have been extensively studied recently. However, while physical origins of two effects …

The topological phase transitions (TPT) of light refers to a topological evolution from one
type of spin-orbit interaction to another, which has been recently found in beam scattering at …

The invention of the laser has revolutionized modern science and engineering as well as
our daily lives. Recently, a new class of lasers based on concepts borrowed from parity–time …

Negative refraction is an exotic optical phenomenon that is usually observed at the interface
between a positive-index material and a negative-index, or “left-handed” material. One direct …