= Orbital angular momentum of light
{wiki=Orbital_angular_momentum_of_light}
Orbital angular momentum (OAM) of light refers to a property of light waves that describes the phase structure of a beam of light. While conventional light beams, such as Gaussian beams, may carry only a spin angular momentum associated with their polarization (often described as the "twist" of the light), certain types of light beams can carry additional angular momentum due to their spatial structure.
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