Spin-Orbit Photonics with Potato Starch Lenses

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0198210" target="_blank" >RIV/00216305:26620/26:0198210 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/25:73631427

Result on the web

<a href="https://advanced.onlinelibrary.wiley.com/doi/10.1002/adom.202500684" target="_blank" >https://advanced.onlinelibrary.wiley.com/doi/10.1002/adom.202500684</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adom.202500684" target="_blank" >10.1002/adom.202500684</a>

Result language

angličtina

Original language name

Spin-Orbit Photonics with Potato Starch Lenses

Original language description

Advanced flat optics based on metasurfaces or liquid crystals control the dynamic and geometric (Pancharatnam-Berry) phases of light through in-plane variations of refractive index and birefringence. This study introduces spherulites, structures inherent to starch and other polycrystalline materials, as unique volume optical elements that modulate the dynamic phase through changes in the geometric path of rays, while simultaneously controlling the geometric phase via 3D variations in anisotropy. The shape-dependent dynamic phase focuses light, while the geometric phase, resulting from the structural radial anisotropy, generates optical vortices, converting light's spin into orbital angular momentum. This phase interplay establishes spherulite-based spin-orbit photonics. After the challenging holographic verification of both phases, starch spherulites extracted from potato tubers are demonstrated as standard and vortex microlenses, with their operation controlled by light polarization. The suitability of spherulites for light sensing is demonstrated by measuring vortex topological charges and fully reconstructing any Poincar & eacute; sphere polarization state of incident light from the spherulite's focal intensity spot. A vectorial Shack-Hartmann experiment with starch spherulites showcases this novel polarimetric sensing alongside wavefront measurement. By transferring the discovered properties of spherulites to artificial metamaterials, new polarization lenses, on-chip vortex detectors, and polarization-sensitive wavefront sensors can be developed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Advanced Optical Materials

ISSN

2195-1071

e-ISSN

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Volume of the periodical

13

Issue of the periodical within the volume

21

Country of publishing house

DE - GERMANY

Number of pages

13

Pages from-to

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UT code for WoS article

001492429800001

EID of the result in the Scopus database

2-s2.0-105005850826