Ultra-Thin metasurface absorbers for spectro-polarimetric radiation detectors: In-depth electromagnetic analysis and practical design for subterahertz band

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

We present the results of extensive theoretical and experimental investigations of high-performance ultra-Thin metasurface-based radiation absorbers designed for narrow-band operation at subterahertz (subTHz) frequencies and intended for integration with spectro-polarimetric sensors of a thermal type. Implemented in a three-layered configuration with a capacitive frequency selective surface (FSS) backed by a grounded dielectric slab, the absorbers are analyzed in terms of minimizing their thickness-To-wavelength (d / λ) ratio and absorption bandwidth, while maximizing the FSS unit cells subwavelengthness and free dispersion range for absorption spectra. A choice of optimal material parameters and a role of near-field 'FSS-ground plane' coupling are discussed and an optimal FSS pattern for a 'spectrometric' absorber is deduced. Supplemented with experimental measurements in the range of 0.1-1 THz demonstrating feasibility of attaining d / λ∼1/200 at the bandwidth of several percent, original cost-effective metasurface-Absorber-based schemes for uncooled thermal subTHz sensing with spectrometric, polarimetric, and imaging capabilities are also considered.

Язык оригиналаанглийский
Название основной публикации2017 11th International Congress on Engineered Material Platforms for Novel Wave Phenomena, Metamaterials 2017
ИздательInstitute of Electrical and Electronics Engineers Inc.
Страницы193-195
Число страниц3
ISBN (электронное издание)9781538637685
DOI
СостояниеОпубликовано - 14 ноя 2017
Событие11th International Congress on Engineered Material Platforms for Novel Wave Phenomena, Metamaterials 2017 - Marseille, Франция
Продолжительность: 28 авг 20172 сен 2017

Конференция

Конференция11th International Congress on Engineered Material Platforms for Novel Wave Phenomena, Metamaterials 2017
СтранаФранция
ГородMarseille
Период28.08.201702.09.2017

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