WebOct 28, 2024 · The production of photonic hook (PH) is due to the breaking of structural symmetry of a plane-wave illuminated microparticle. Herein, we presented and … WebMay 27, 2024 · A new type of curved subwavelength light beam, a photonic hook (PH), emerging from the diffraction of a light wave at a mesoscale dielectric object with broken …

(PDF) Photonic hooks from Janus microcylinders

WebAug 23, 2024 · Photonic hooks (PHs) are a new class of curved light beams, they have been theoretically predicted and experimentally observed. The generation of photonic hook (PH) is related to the symmetry-broken of micro-particles under a plane wave illumination. Recently, twin photonic hooks (t-PHs) can be produced utilizing twin-ellipse micro-cylinder. WebDec 1, 2024 · Photonic hook (PH) is a new type of PJ in which the artificial curved beam is focused by a Janus dielectric particle with a waist less than the half of wavelength [27,28,29,30]. The PH forming mechanism requires asymmetry of illumination wavefront, the dielectric particle in the manner of geometric shape, or the optical properties of particle ... iphone photo show podcast

Tailoring ‘photonic hook’ from Janus dielectric microbar

WebThe possibility of overcoming the critical condition for localized photonic nanojet (PNJ) upon plane optical wave diffraction at mesoscale dielectric particle, which is commonly known as ‘the refractive index contrast is less than two’, was recently reported in our works. To this end, the novel geometrical scheme of PNJ generation in ‘reflection mode’ was … WebJan 1, 2024 · In this work, we use a dielectric nano-layer to tune the PNJs generated from a micro-cylinder. Two kinds of illuminations i.e. symmetric and asymmetric illumination, can be achieved by adding a nano-layer at the beam input side of the cylinder. Firstly, we investigate tunable PNJs under the condition of symmetric illumination. orange county hiking trail shaded