Liquid-Crystal-Based Controllable Attenuators Operating in the 1-4 Terahertz Band
Optics
2023-06-14 v1 Soft Condensed Matter
Abstract
Liquid-crystal devices (LCDs) offer a potential route toward adaptive optical components for use in the < 2 THz band of the electromagnetic spectrum. We demonstrate LCDs using a commercially available material (E7), with unbiased birefringence values of 0.14-0.18 in the 0.3-4 THz band. We exploit the linear dichroism of the material to modulate the emission from a 3.4-THz quantum cascade laser by up to 40%, dependent upon both the liquid-crystal layer thickness and the bias voltage applied.
Keywords
Cite
@article{arxiv.2306.07665,
title = {Liquid-Crystal-Based Controllable Attenuators Operating in the 1-4 Terahertz Band},
author = {Aniela Dunn and Zhaopeng Zhang and Michael D. Horbury and Eleanor V. Nuttall and Yingjun Han and Mohammed Salih and Lianhe Li and Abigail Bond and Ehab Saleh and Russell Harris and Diego Pardo and Brian N. Ellison and Andrew D. Burnett and Helen F. Gleeson and Alexander Valavanis},
journal= {arXiv preprint arXiv:2306.07665},
year = {2023}
}
Comments
10 pages, 6 figures