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arXiv · 0801.2309

Paraxial Light Beams with Angular Momentum

A. Bekshaev·M. Soskin·M. Vasnetsov
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Abstract

Fundamental and applied concepts concerning the ability of light beams to carry a certain mechanical angular momentum with respect to the propagation axis are reviewed and discussed. Following issues are included: Historical reference; Angular momentum of a paraxial beam and its constituents; Spin angular momentum and paradoxes associated with it; Orbital angular momentum; Circularly-spiral beams: examples and methods of generation; Orbital angular momentum and the intensity moments; Symmetry breakdown and decomposition of the orbital angular momentum; Mechanical models of the vortex light beams; Mechanical action of the beam angular momentum; Rotational Doppler effect, its manifestation in the image rotation; Spectrum of helical harmonics and associated problems; Non-collinear rotational Doppler effect; Properties of a beam forcedly rotating around its own axis. Research prospects and ways of practical utilization of optical beams with angular momentum.

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A. Bekshaev, M. Soskin, M. Vasnetsov. 2008-01-15. Paraxial Light Beams with Angular Momentum. https://arxiv.org/abs/0801.2309

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