Space-Time Wedges
Optics
2024-11-01 v1 Applied Physics
Abstract
Space-time-modulated systems have attracted significant interest over the past decade due to their ability to manipulate electromagnetic waves in unprecedented ways. Here, we introduce a new type of space-time-modulated structure, the space-time wedge, consisting of two interfaces moving at different velocities, which results in either closing or opening wedges. Using moving boundary conditions, we derive closed-form solutions for the scattering of electromagnetic waves in such a wedge and leverage these solutions to unveil the underlying physics, including multiple space-time scattering and Doppler shifting. The space-time wedge holds potential for various optical and photonic applications.
Cite
@article{arxiv.2410.23291,
title = {Space-Time Wedges},
author = {Amir Bahrami and Klaas De Kinder and Zhiyu Li and Christophe Caloz},
journal= {arXiv preprint arXiv:2410.23291},
year = {2024}
}