Structured Light: Ideas and Concepts
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Дата
2020
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Анотація
The paper briefly presents some essential concepts and features of light fields with
strong spatial inhomogeneity of amplitude, phase, polarization, and other parameters.
It contains a characterization of optical vortices, speckle fields, polarization singularities.
A special attention is paid to the field dynamical characteristics (energy, momentum,
angular momentum, and their derivatives), which are considered not only as mechanical
attributes of the field but also as its meaningful and application-oriented descriptive
parameters. Peculiar features of the light dynamical characteristics in inhomogeneous
and dispersive media are discussed. The dynamical properties of paraxial beams and
evanescent waves (including surface plasmon–polaritons) are analyzed in more detail;
in particular, a general treatment of the extraordinary spin and momentum, orthogonal
to the main propagation direction, is outlined. Applications of structured light fields for
optical manipulation, metrology, probing, and data processing are described.
Опис
Ключові слова
singular optics, optical vortex, polarization singularity, dynamical characteristics, paraxial beams, evanescent fields, optical manipulation, optical data processing
Бібліографічний опис
Frontiers in Physics