Open AccessPhotonic hook - a new type of self-bending structured light beams
Author(s) -
Pavel Baranov,
Ivan Zatonov,
Bien Bui Duc
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1614/1/012106
Subject(s) - optics , electromagnetic radiation , bent molecular geometry , physics , radius of curvature , wavelength , curvature , beam (structure) , photonics , dispersion (optics) , phase velocity , bending , materials science , geometry , mean curvature , mathematics , mean curvature flow , composite material , thermodynamics
During the last 2 years, it was shown that an electromagnetic beam configuration can be bent after propagation through an asymmetrically shaped (Janus) dielectric particle, which adds a new degree of simplicity for generation of a curved light beam. This effect is termed “photonic hook” (PH) and differs from Airy-family beams. PH features the smallest curvature radius of electromagnetic waves ever reported which is about 2 times smaller than the wavelength of the electromagnetic wave. The nature of a photonic hook is a the dispersion of the phase velocity of the waves inside a trapezoid or composed particle, resulting in an interference afterwards.