Photonic quantum technologies represent a promising platform for several applications,
ranging from long-distance communications to the simulation of complex phenomena …

As an indispensable complement to an integer vortex beam, the fractional vortex beam has
unique physical properties such as radially notched intensity distribution, complex phase …

The orbital angular momentum (OAM) of beams provides a new dimension, and have
already found lots of applications in various domains. Among such applications, the …

Light beams carrying orbital angular momentum are key resources in modern photonics. In
many applications, the ability to measure the complex spectrum of structured light beams in …

We report an atmospheric multichannel data transmission system with channel separation
by vortex beams of various orders, including half-integer values. For the demultiplexing of …

Light beams can be characterized by their complex spatial profiles in both intensity and
phase. Analogous to time signals, which can be decomposed into multiple orthogonal …

Vortex beams with helical phase, carrying phase singularity and orbital angular momentum,
have attract great attention in the past decades due to their wide applications in optical …

Ever since vortex beams were proposed, they are known for owning phase singularity and
carrying orbital angular momentum (OAM). In the past decades, coherent optics developed …

The Fabry-Perot (FP) interference model was used to make a 6-layer metasurface with cross-
polarization that can be changed by heat. The fundamental concept behind the metasurface …

We report on a simple experimental scheme to generate and control the orbital angular
momentum (OAM) spectrum of the asymmetric vortex beams in a nonlinear frequency …