Jaka Pišljar (Avtor), Miha Ravnik (Avtor)

Povzetek

We demonstrate that birefringent profiles of double-twist cylinders, found in some chiral nematic systems such as blue phases, can perform as polarization-selective microlenses and waveguides in the regime of negative birefringence. Specifically, we solve Maxwell’s equations using the finite-difference time-domain (FDTD) method, to simulate light propagation through double-twist cylinder birefringent structures. We show that, in case of negative material birefringence, azimuthally polarized beams experience lensing which can further be extended to waveguiding in double-twist cylinders. Lensing and waveguiding efficiency are shown to be strongly dependent on the ratio between the width of the double-twist cylinder profile and the beam width. We further characterize waveguiding in terms of losses, which are investigated in case of straight as well as curved double-twist cylinders. More generally, this work is a contribution to the design and development of (soft) birefringent profiles for optical and photonic applications.

Ključne besede

optika;fotonika;dvolomnost;nematski tekoči kristali;lečenje;valovodi;optics;photonics;birefringence;nematic liquid crystals;lensing;waveguiding;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 535.5
COBISS: 3242852 Povezava se bo odprla v novem oknu
ISSN: 1094-4087
Št. ogledov: 562
Št. prenosov: 163
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;dvolomnost;nematski tekoči kristali;lečenje;valovodi;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 26327-26338
Letnik: ǂVol. ǂ26
Zvezek: ǂno. ǂ20
Čas izdaje: 2018
DOI: 10.1364/OE.26.026327
ID: 13153726