Paraxial and nonparaxial regimes of angular momentum absorption from twisted light

This article likely discusses the interaction of twisted light (light with orbital angular momentum) with matter, focusing on how the light's angular momentum is absorbed. The terms "paraxial" and "nonparaxial" refer to different approximations used in optics, with paraxial being a simpler approximation valid for light traveling nearly parallel to an axis. The research likely explores the behavior of this absorption under different conditions and approximations.