Anja Bregar (Avtor), Mitja Štimulak (Avtor), Miha Ravnik (Avtor)

Povzetek

Periodic birefringence is today extensively explored as an interesting route for controlling the flow of light. Distinctly, complex fluids with periodic modulations of birefringence can perform as photonic crystals, with the main examples being cholesteric and blue phases birefringent profiles. Here we demonstrate the characteristics of light propagation in heliconical liquid crystal and demonstrate their tunable optical and photonic properties, specifically as onedimensional photonic crystals, in the regime of heliconical pitch comparable to the wavelength of light. Using a combination of frequency- and time-domain simulations, we show the existence and properties of the photonic band gap, as determined by the relative handedness of the polarization of light and the heliconical structure. We calculate photonic eigenmodes of the light and find the emergence of electric field component along the propagation axis of light, for both left- and right-handed polarization of light, which in turn results in strongly spatially varying Poynting vector that exhibits circular-like and four-leaf-clover-like patterns. As this variation of the Poynting vector is tunable with various material parameters and external (electric) fields, heliconical birefringence photonic crystals show interesting potential for use in tunable photonic applications, such as complex modulation of light beams.

Ključne besede

optika;fotonika;tekoči kristali;optics;photonics;liquid crystals;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 535.5
COBISS: 3232100 Povezava se bo odprla v novem oknu
ISSN: 1094-4087
Št. ogledov: 502
Št. prenosov: 170
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;fotonika;tekoči kristali;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 23265-23277
Letnik: ǂVol. ǂ26
Zvezek: ǂno. ǂ18
Čas izdaje: 2018
DOI: 10.1364/OE.26.023265
ID: 13157073