2023/05/08 by Iridanos Loulas, Loulas, Iridanos, Grigorios P. Zouros +5 · 1 citation
Engineering · Materials Science · #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optics (physics.optics) #Photonic and Optical Devices #Terahertz technology and applications
paper · pdf · doi:10.48550/arxiv.2305.04509
openalex publication_date 2023/05/08 · openalex created_date 2023/05/10 · openalex updated_date 2026/07/28
In this study we investigate the directional scattering of terahertz radiation by dielectric cylinders, focusing on the enhancement of directionality using incident radiation of complex-frequency. We explore the optimization of the second Kerker condition, which corresponds to backward scattering. At first, by carefully tailoring the electric and magnetic polarizabilities of the cylinders, we successfully achieve significant backward scattering, and then manage to even further improve it by deploying a decaying incoming wave (complex-frequency). Additionally, we present preliminary results on the directional scattering of THz radiation by a magneto-optical cylinder, demonstrating the potential of this approach for advanced control over the propagation of THz waves. Our findings contribute to a deeper understanding of THz directional scattering and pave the way for the development of novel THz devices and applications, such as high-resolution imaging, sensing, and communication systems.