This Collection supports and amplifies research related to SDG 9 - Industry, Innovation and Infrastructure. The ability to control the phase, polarization, and intensity of light is extensively ...

Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase singularities. While they have been widely studied in recent decades, two ...

Light is not supposed to behave like a trapped whirlpool, yet researchers have now shown that it can do exactly that inside a material more familiar from displays than from frontier photonics. The ...

Knots and links, with their unique and robust topological structures, play a vital role across various disciplines, including physics, life sciences, and light–matter interactions. As a representative ...