Controlling diffracted beam-polarization by patterned optical-field in a photosensitive chiral nematic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933747" target="_blank" >RIV/60461373:22310/25:43933747 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.molliq.2024.126814" target="_blank" >https://doi.org/10.1016/j.molliq.2024.126814</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2024.126814" target="_blank" >10.1016/j.molliq.2024.126814</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Controlling diffracted beam-polarization by patterned optical-field in a photosensitive chiral nematic

Popis výsledku v původním jazyce

Rotation of the light polarization of a diffracted beam, manipulated by imposed patterned UV optical field, is proposed and examined in a photosensitive chiral nematic liquid crystal. Such operations can be performed dynamically and reversibly, by varying the UV intensity. It was revealed that the rotations are ascribed to an optical-field-induced chirality effect, where the helical structure in chiral nematics changes periodically in space in accordance with the UV intensity profile. Using continuum elastic theory and the optical Jones matrix technique, we determined the dependence of polarization orientation on UV intensity. By changing the polarity and magnitude of chirality in chiral nematics, UV light can control the orientation of the polarization state sweeping across the entire horizontal plane, making it possible for polarization converter applications. Proof-of-concept prototypes capable of generating customized vortex and vector beams are demonstrated, proving that by virtue of remote and precise control of the optical field, a polarization field with specific spatial structures can be generated. © 2024 Elsevier B.V.

Název v anglickém jazyce

Controlling diffracted beam-polarization by patterned optical-field in a photosensitive chiral nematic

Popis výsledku anglicky

Rotation of the light polarization of a diffracted beam, manipulated by imposed patterned UV optical field, is proposed and examined in a photosensitive chiral nematic liquid crystal. Such operations can be performed dynamically and reversibly, by varying the UV intensity. It was revealed that the rotations are ascribed to an optical-field-induced chirality effect, where the helical structure in chiral nematics changes periodically in space in accordance with the UV intensity profile. Using continuum elastic theory and the optical Jones matrix technique, we determined the dependence of polarization orientation on UV intensity. By changing the polarity and magnitude of chirality in chiral nematics, UV light can control the orientation of the polarization state sweeping across the entire horizontal plane, making it possible for polarization converter applications. Proof-of-concept prototypes capable of generating customized vortex and vector beams are demonstrated, proving that by virtue of remote and precise control of the optical field, a polarization field with specific spatial structures can be generated. © 2024 Elsevier B.V.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF MOLECULAR LIQUIDS

ISSN

0167-7322

e-ISSN

1873-3166

Svazek periodika

420

Číslo periodika v rámci svazku

15.2.2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

nestránkováno

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85213702964