Reflection spectra and near-field images of a liquid crystalline half-Skyrmion lattice

Jun Ichi Fukuda, Slobodan Umer

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We investigate numerically the optical properties of a hexagonal half-Skyrmion lattice exhibited by a highly chiral liquid crystal confined between two parallel plates. Our study focuses on the near and far-field reflection for normally incident light with di erent polarizations. We show that, when the wavelength of the incident light is longer than a threshold value, the reflectivity is almost insensitive to the polarization of the incident light, although the intensity profiles of the reflected light, in particular in the near-field regime, depend significantly on the polarization. The former property is attributable to the quasi two-dimensional nature of the half-Skyrmion lattice, that is, an almost uniform orientational order along the direction normal to the confining plates. Our results for the intensity of reflected light generated by evanescent as well as propagating contributions suggest that direct evidence of the formation and structure of half-Skyrmions could be provided by near-field optics with resolutions higher than that of conventional optical microscopy.

Original languageEnglish
Pages (from-to)1174-1184
Number of pages11
JournalOptics Express
Volume26
Issue number2
DOIs
Publication statusPublished - Jan 22 2018

Fingerprint

near fields
liquids
polarization
parallel plates
confining
far fields
liquid crystals
optics
microscopy
reflectance
optical properties
thresholds
high resolution
profiles
wavelengths

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Reflection spectra and near-field images of a liquid crystalline half-Skyrmion lattice. / Fukuda, Jun Ichi; Umer, Slobodan.

In: Optics Express, Vol. 26, No. 2, 22.01.2018, p. 1174-1184.

Research output: Contribution to journalArticle

@article{3674673005e0472eb96cadfe207c9180,
title = "Reflection spectra and near-field images of a liquid crystalline half-Skyrmion lattice",
abstract = "We investigate numerically the optical properties of a hexagonal half-Skyrmion lattice exhibited by a highly chiral liquid crystal confined between two parallel plates. Our study focuses on the near and far-field reflection for normally incident light with di erent polarizations. We show that, when the wavelength of the incident light is longer than a threshold value, the reflectivity is almost insensitive to the polarization of the incident light, although the intensity profiles of the reflected light, in particular in the near-field regime, depend significantly on the polarization. The former property is attributable to the quasi two-dimensional nature of the half-Skyrmion lattice, that is, an almost uniform orientational order along the direction normal to the confining plates. Our results for the intensity of reflected light generated by evanescent as well as propagating contributions suggest that direct evidence of the formation and structure of half-Skyrmions could be provided by near-field optics with resolutions higher than that of conventional optical microscopy.",
author = "Fukuda, {Jun Ichi} and Slobodan Umer",
year = "2018",
month = "1",
day = "22",
doi = "10.1364/OE.26.001174",
language = "English",
volume = "26",
pages = "1174--1184",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "2",

}

TY - JOUR

T1 - Reflection spectra and near-field images of a liquid crystalline half-Skyrmion lattice

AU - Fukuda, Jun Ichi

AU - Umer, Slobodan

PY - 2018/1/22

Y1 - 2018/1/22

N2 - We investigate numerically the optical properties of a hexagonal half-Skyrmion lattice exhibited by a highly chiral liquid crystal confined between two parallel plates. Our study focuses on the near and far-field reflection for normally incident light with di erent polarizations. We show that, when the wavelength of the incident light is longer than a threshold value, the reflectivity is almost insensitive to the polarization of the incident light, although the intensity profiles of the reflected light, in particular in the near-field regime, depend significantly on the polarization. The former property is attributable to the quasi two-dimensional nature of the half-Skyrmion lattice, that is, an almost uniform orientational order along the direction normal to the confining plates. Our results for the intensity of reflected light generated by evanescent as well as propagating contributions suggest that direct evidence of the formation and structure of half-Skyrmions could be provided by near-field optics with resolutions higher than that of conventional optical microscopy.

AB - We investigate numerically the optical properties of a hexagonal half-Skyrmion lattice exhibited by a highly chiral liquid crystal confined between two parallel plates. Our study focuses on the near and far-field reflection for normally incident light with di erent polarizations. We show that, when the wavelength of the incident light is longer than a threshold value, the reflectivity is almost insensitive to the polarization of the incident light, although the intensity profiles of the reflected light, in particular in the near-field regime, depend significantly on the polarization. The former property is attributable to the quasi two-dimensional nature of the half-Skyrmion lattice, that is, an almost uniform orientational order along the direction normal to the confining plates. Our results for the intensity of reflected light generated by evanescent as well as propagating contributions suggest that direct evidence of the formation and structure of half-Skyrmions could be provided by near-field optics with resolutions higher than that of conventional optical microscopy.

UR - http://www.scopus.com/inward/record.url?scp=85040965788&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040965788&partnerID=8YFLogxK

U2 - 10.1364/OE.26.001174

DO - 10.1364/OE.26.001174

M3 - Article

AN - SCOPUS:85040965788

VL - 26

SP - 1174

EP - 1184

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 2

ER -