Design, fabrication, and applications of THz dielectric metamaterials

Adhitya Bharadwaj Sriram; Daniel Lu; Philip D. Mauskopf; Cassandra N. Whitton; Christopher E. Groppi; Georgios Trichopoulos; Aditya Shekhawat

doi:10.1117/12.3020779

16 August 2024 Design, fabrication, and applications of THz dielectric metamaterials

Adhitya Bharadwaj Sriram, Daniel Lu, Philip D. Mauskopf, Cassandra N. Whitton, Christopher E. Groppi, Georgios Trichopoulos, Aditya Shekhawat

Author Affiliations +

Proceedings Volume 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; 131021U (2024) https://doi.org/10.1117/12.3020779
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

In this manuscript, a rapid design process flow for multi-layered Terahertz (THz) optical components for Cosmic Microwave Background (CMB) telescopes using artificial dielectric metamaterials made up of periodic 2D grid of metal squares embedded in a dielectric material with a fixed interlayer spacing, termed ”capacitive grids”, is discussed. The modeling of such metamaterials using ideal RF transmission line sections to achieve an arbitrary value of refractive index and their fabrication using aluminum embedded in a polyimide dielectric is presented. Finally, the design and HFSS simulations results of a stepped-impedance low-pass quasi-optic metamaterial filter is discussed as an application of such a rapid design methodology in designing complex quasi-optical components with variable refractive indices in the millimeter wave and THz astronomy applications.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Adhitya Bharadwaj Sriram, Daniel Lu, Philip D. Mauskopf, Cassandra N. Whitton, Christopher E. Groppi, Georgios Trichopoulos, and Aditya Shekhawat "Design, fabrication, and applications of THz dielectric metamaterials", Proc. SPIE 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, 131021U (16 August 2024); https://doi.org/10.1117/12.3020779

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