Multi-Pitch Liquid Crystal Filters with Single Layer Polymer Template.

Zhikang Zhu,Yao Gao,Jiangang Lu

doi:10.3390/polym13152521

Abstract

Multi-reflective peak and bandwidth scalable liquid crystal (LC) filters were investigated. By refilling a cholesteric LC (CLC) whose chiral pitch is different to the target template into a blue phase LC (BPLC) template, a multi-reflective peak single layer LC filter can be fabricated. With multiple templating and refilling processes, the number of reflective peaks can be further increased. Moreover, by refilling the CLCs of designed chiral pitch into a CLC template sequentially, a bandwidth scalable single layer CLC filter can be fabricated. The LC filters show great potential applications in optical communication, display, and LC lasing.

Highlights

IntroductionMulti-Pitch Liquid Crystal Filters with Single Layer Polymer Template
A multi-wavelength chiral structure liquid crystal (LC) filter and a bandwidth tunable cholesteric LC (CLC) filter with a single layer structure was fabricated by the multiple wash out–refilling process
The experimental results show that the maximum deviation between the center wavelength of the multi-wavelength LC filter and the designed center wavelength is only 16 nm, and the FWHM of the tunable CLC filter can be broadened by 96% compared with the original FWHM of the CLC filter, 111 nm, and can be broadened continuously

Summary

Introduction

Multi-Pitch Liquid Crystal Filters with Single Layer Polymer Template. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Methods

Results

Conclusion