天线耦合钛微测辐射热计：在太赫兹时域系统中用于精确控制辐射方向图的应用

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

作者信息

Qi Liang, Minkevičius Linas, Urbanowicz Andrzej, Švigelj Andrej, Grigelionis Ignas, Kašalynas Irmantas, Trontelj Janez, Valušis Gintaras

机构信息

Center for Physical Sciences and Technology (FTMC), Department of Optoelectronics, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania.

Laboratory for Microelectronics, Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000 Ljubljana, Slovenia.

出版信息

Sensors (Basel). 2021 May 18;21(10):3510. doi: 10.3390/s21103510.

DOI:10.3390/s21103510

PMID:34070029

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8158144/

Abstract

An ability of lensless titanium-based antenna coupled microbolometers (Ti-μbolometers) 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-μbolometers 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-μbolometers are convenient lensless sensors suitable to discriminate and control THz radiation pattern features in various wideband THz-TDS systems.

摘要

展示了室温下工作的无透镜钛基天线耦合测辐射热计（Ti-μbolometers）在太赫兹时域光谱（THz-TDS）系统中精确监测辐射方向图的能力。为了提供全面的情况，选择了两种不同的THz-TDS系统以及与三种不同天线耦合的Ti-μbolometers——用于0.3太赫兹、0.7太赫兹的窄带偶极天线和用于宽带检测的对数周期天线——进行实验。研究了辐射方向图、空间光束轮廓以及沿传播轴的明确光束演变；揭示了在各种太赫兹发射器功率范围内的偏振敏感特性。结果发现，所研究的Ti-μbolometers是方便的无透镜传感器，适用于区分和控制各种宽带THz-TDS系统中的太赫兹辐射方向图特征。