Terahertz Chiral Optics with Ordered Carbon Nanotube Architectures
Optics
2025-09-03 v1
Abstract
Chiral optical terahertz (THz) devices have significant technological implications for telecommunications, spectroscopy, and sensing. Engineering tunable, broadband, and cost-effective THz chiral materials has long been recognized as a challenging endeavor and has been the bottleneck hindering the full exploitation of the THz spectrum. Here, we present an artificial structure based on aligned carbon nanotube films that exhibit a tunable broadband circular dichroism (CD) up to 2.8 degrees. Its behavior is reciprocal. The developed theoretical simulations are in agreement with the experiments and predict a further increase of CD signal up to ~30 degrees when more CNT layers are added.
Cite
@article{arxiv.2509.00330,
title = {Terahertz Chiral Optics with Ordered Carbon Nanotube Architectures},
author = {Gustavo M. Rodriguez-Barrios and Andrey Baydin and Jacques Doumani and Dasom Kim and Henry O. Everitt and Junichiro Kono},
journal= {arXiv preprint arXiv:2509.00330},
year = {2025}
}