Intrinsic and extrinsic nature of the orbital angular momentum of a light beam.

By A. T. O'Neil, I. Macvicar, L. Allen, Miles J. Padgett. Physical Review Letters, 2002

881 citations recorded by the source corpus.

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

Spin-to-orbital conversion of the angular momentum of light and its classical and quantum applications (2011, background): “the beam axis [10–12].”
Transverse and longitudinal angular momenta of light (2015, methodology): “17) perfectly explain the results of the experiments [16,17] (Fig.”
Electron vortices: Beams with orbital angular momentum (2017, background): “…orbital angular momentum can not be clearly separated in general, i.e without the imposition of the paraxial approximation (Barnett and Allen, 1994; O’Neil et al., 2002; Van Enk et al., 1994), which leads to the possibility of the entanglement of the two degrees of freedom (Khoury and Milman,…”
Photonic spin Hall effect in metasurfaces: a brief review (2017, background): “the optical vortex located at the beam axis) is associated with another internal form of orbital angular momentum [50, 51].”
Philosophical Transactions of the Royal Society A : Mathematical (2017, background): “For particles held off-axis in the bright annulus of the helicallyphased beam the different natures of the spin and orbital angular momenta are revealed: the spin angular momentum causes the trapped particle to spin on its axis, but the orbital angular momentum causes the particle to orbit the vorte”