Orbital angular momentum microlaser: from the first demonstration to tunability

摘要

Orbital angular momentum (OAM) light holds a promise for multi-dimensional high capacity optical communication. By harnessing spin-orbit interaction and non-Hermitian symmetry, we demonstrate an OAM-tunable vortex microlaser, providing chiral light states of variable topological charges for the development of OAM-spin-wavelength division multiplexing technology.