Faheem Hassan (Avtor), Irena Drevenšek Olenik (Avtor)

Povzetek

One of the fundamental components in modern optics and advanced photonics is diffraction grating, crucial for designing compact and highly tunable advanced optical devices. We demonstrate formation of a dynamic diffraction grating induced by two wave-mixing in a ferroelectric nematic liquid crystal (N$_\mathrm{F}$LC) with the assistance of a weak electric field. A grating with a first-order diffraction efficiency of $\sim~3.8~\%$ was recorded with a recording intensity of 64 mW/cm$^2$. The corresponding effective nonlinear refractive index n$_2$ was around 2.6 × 10$^{-2}$ cm$^2$/W, which is notably higher than that of pure nematic liquid crystals. The underlying mechanism is attributed to the reorientation of the director field caused by the synergic effect of combined torques originating from the optical and electric fields. The observed high nonlinearity offers a pathway for designing novel versatile liquid crystal-based devices, to our knowledge, expanding potential applications of ferroelectric nematics in various nonlinear and electro-optical processes.

Ključne besede

optika;uklonske mrežice;feroelektrični nematski tekoči kristali;električno polje;optics;diffraction gratings;ferroelectric nematic liquid crystals;electric field;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 535.421
COBISS: 239157763 Povezava se bo odprla v novem oknu
ISSN: 0146-9592
Št. ogledov: 191
Št. prenosov: 21
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: optika;uklonske mrežice;feroelektrični nematski tekoči kristali;električno polje;
Vrsta dela (COBISS): Članek v reviji
Konec prepovedi (OpenAIRE): 2026-06-11
Strani: str. 4038-4041
Letnik: ǂVol. ǂ50
Zvezek: ǂno. ǂ12
Čas izdaje: 2025
DOI: 10.1364/OL.564279
ID: 26675321