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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Controlling diffracted beam-polarization by patterned optical-field in a photosensitive chiral nematic
Original language description
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.
Czech name
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Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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