Antenna-Coupled Titanium Microbolometers: Application for Precise Control of Radiation Patterns in Terahertz Time-Domain Systems

An ability of lensless titanium-based antenna coupled microbolometers (Ti- [Formula: see text] bolometers) operating at room temperature to monitor precisely radiation patterns in terahertz time-domain spectroscopy (THz-TDS) systems are demonstrated. To provide comprehensive picture, two different T...

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Detalles Bibliográficos
Autores principales: Qi, Liang, Minkevičius, Linas, Urbanowicz, Andrzej, Švigelj, Andrej, Grigelionis, Ignas, Kašalynas, Irmantas, Trontelj, Janez, Valušis, Gintaras
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8158144/
https://www.ncbi.nlm.nih.gov/pubmed/34070029
http://dx.doi.org/10.3390/s21103510
Descripción
Sumario:An ability of lensless titanium-based antenna coupled microbolometers (Ti- [Formula: see text] bolometers) operating at room temperature to monitor precisely radiation patterns in terahertz time-domain spectroscopy (THz-TDS) systems are demonstrated. To provide comprehensive picture, two different THz-TDS systems and Ti- [Formula: see text] bolometers coupled with three different antennas—narrowband dipole antennas for 0.3 THz, 0.7 THz and a log-periodic antenna for wideband detection—were selected for experiments. Radiation patterns, spatial beam profiles and explicit beam evolution along the propagation axis are investigated; polarization-sensitive properties under various THz emitter power ranges are revealed. It was found that the studied Ti- [Formula: see text] bolometers are convenient lensless sensors suitable to discriminate and control THz radiation pattern features in various wideband THz-TDS systems.

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