Real-Time Rapid-Scanning Time-Domain Terahertz Radiation Registration System With Single-Digit Femtosecond Delay-Axis Precision

IF 3.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Terahertz Science and Technology Pub Date : 2024-02-22 DOI:10.1109/TTHZ.2024.3368653

Mingyuan Zhang;Jacob Byers;Brett N. Carnio;Abdulhakem Y. Elezzabi

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Abstract

We demonstrate a real-time terahertz time-domain electric field registration system, with the system utilizing a permanent-magnet electrodynamic exciter (mini-shaker) with its movement being resolved via an interferometric tracking method. This system is used to record a terahertz electric field, with the signal being encompassed within a scan range of several picoseconds and the system being capable of realizing a single-digit femtosecond precision in the delay axis. The real-time rapid-scan system is shown to exhibit a 47 dB signal dynamic range for a THz electric field measurement consisting of the average of 300 scans. Measured THz signals show excellent agreement with the traditional step-scan system. As the developed system permits real-time monitoring of terahertz electric fields (along with a higher delay-axis precision) compared to traditional step-scan terahertz time-domain spectroscopy), we envision this system being used for critical applications such as environmental gas detection, security checks, radar monitoring, and among others.

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具有个位数飞秒延迟轴精度的实时快速扫描时域太赫兹辐射注册系统

我们展示了一种实时太赫兹时域电场登记系统，该系统利用永磁电动激振器（微型激振器），通过干涉跟踪法解析其运动。该系统用于记录太赫兹电场，信号的扫描范围为数皮秒，系统能够实现延迟轴的个位飞秒精度。实时快速扫描系统在太赫兹电场测量中显示出 47 dB 的信号动态范围，包括 300 次扫描的平均值。测量到的太赫兹信号与传统的步进扫描系统显示出极佳的一致性。与传统的步进扫描太赫兹时域光谱仪相比，所开发的系统能够实时监测太赫兹电场（同时具有更高的延迟轴精度），因此我们设想将该系统用于环境气体检测、安全检查、雷达监测等关键应用领域。

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来源期刊

IEEE Transactions on Terahertz Science and Technology ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

7.10

自引率

9.40%

发文量

102

期刊介绍： IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.