Applications of Tamm plasmon-liquid crystal devices

Shie-Chang Jeng*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The Tamm-plasmon-polariton (TPP) occurs at the interface between a metallic film and the photonic-crystal (PC) substrate. Unlike conventional surface-plasmon-polariton (SPP), TPP can be directly excited by both the transverse electric (TE) and transverse magnetic (TM) electromagnetic waves without using additional coupling optics. The fact that the optical functionality of most plasmonics devices is determined after fabrication limits their applications. Tunable SPP devices by applying liquid crystals (LCs) have been widely demonstrated due to their large birefringence and easy controllability via external stimuli. However, actively tuning TPP is difficult because the localised electric field is between the metallic film and PC substrate, the change of refractive index above the metallic film has only small influences on TPP. This article is intended to briefly review recent progress towards using LCs for actively tuning TPP devices. Not only TPP devices can gain benefits from LCs, we will also discuss the applications of TPP for measuring the anisotropy of the alignment films of LC devices. The sensitivity of the proposed scheme will be discussed.

Original languageEnglish
Pages (from-to)1223-1231
Number of pages9
JournalLiquid Crystals
Volume47
Issue number8
DOIs
StatePublished - Jun 2020
Event4th Asian Conference on Liquid Crystals (ACLC) - Shenzhen, China
Duration: 17 Jan 201918 Jan 2019

Keywords

  • anisotropic films
  • liquid crystal alignment
  • Tamm-plasmon-polariton
  • tunable plasmonic devices

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