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arXiv · 2509.00330

Terahertz Chiral Optics with Ordered Carbon Nanotube Architectures

Gustavo M. Rodriguez-Barrios·Andrey Baydin·Jacques Doumani·Dasom Kim·Henry O. Everitt·Junichiro Kono
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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.

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Gustavo M. Rodriguez-Barrios, Andrey Baydin, Jacques Doumani, Dasom Kim, Henry O. Everitt, Junichiro Kono. 2025-08-30. Terahertz Chiral Optics with Ordered Carbon Nanotube Architectures. https://arxiv.org/abs/2509.00330

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