Title

Polarisation-Independent Liquid Crystal Devices

Keywords

Amplitude modulation; Liquid crystal devices; Phase modulation; Polarisation-independent; Polariser-free

Abstract

Liquid crystal (LC) devices can be used as amplitude modulators and phase modulators. Most LC devices are polarisation-dependent and require at least one polariser. As a result, the optical efficiency is greatly reduced. In this paper, we review some of our recently developed polarisation-independent LC devices. For amplitude modulation, we report two polariser-free devices which combine light scattering with dye absorption: dye-doped polymer-dispersed liquid crystal (PDLC) and dye-doped LC gels. For phase modulation, we also present two examples: residual phase type, e.g., voltage-biased PDLC, Polymer-Stabilised Cholesteric Texture (PSCT), and homeotropic LC gels; and double-layered structure, such as thin polymer film-separated orthogonal LC layers, and double-layered LC gels. Potential applications of these polarisation-independent LC devices for displays, laser beam steering and adaptive optics are emphasised. © 2008, Taylor & Francis Group, LLC.

Publication Date

1-1-2009

Publication Title

Liquid Crystals Today

Volume

17

Issue

1-2

Number of Pages

2-8

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/13583140802650855

Socpus ID

85019412641 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85019412641

This document is currently not available here.

Share

COinS