Exceptional points (EPs), at which more than one eigenvalue and eigenvector coalesce, are
unique spectral features of non-Hermiticity (NH) systems. They exist widely in open systems …

Photons play essential roles in fundamental physics and practical technologies. They have
become one of the attractive informaiton carriers for quantum computation and quantum …

Structured light fields carrying orbital angular momentum (OAM) have been widely studied,
and a variety of applications have been found. The exploration of the generation of the …

Photonic orbital angular momentum (OAM) carried by phase-structured vortex light is an
important and promising resource for the ever-increasing demand towards high-capacity …

Synthetic dimensions based on particles' internal degrees of freedom, such as frequency,
spatial modes and arrival time, have attracted significant attention. They offer ideal large …

We propose a scheme for simulating the behaviors of Weyl semimetals by using a two-
dimensional array of degenerate optical cavities. To simplify such a three-dimensional …

In this work, the degenerate phenomena of transverse mode's frequency in an off-axis end-
pumped solid-state lasers was researched based on a semi-confocal cavity. When the off …

Great efforts have been made to investigate photon's orbital angular momentum (OAM) due
to its comprehensive applications ranging from micro-manipulation to biosciences. Recently …

Three-dimensional (3D) structured light is a complex form of structured light characterized by
ray-wave duality. The principle for generating 3D structured laser transverse modes has …

Here we present a design of a traveling-wave optical cavity containing four identical
ellipsoidal mirrors arranged in a square. The cavity proves to support more than 21 Laguerre …