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Feature Paper
Article

22 Citations

5,962 Views

13 Pages

International System of Units (SI) Traceable Noise-Equivalent Power and Responsivity Characterization of Continuous Wave ErAs:InGaAs Photoconductive Terahertz Detectors

Anuar de Jesus Fernandez Olvera,
Axel Roggenbuck,
Katja Dutzi,
Nico Vieweg,
Hong Lu,
Arthur C. Gossard and
Sascha Preu

Photonics2019, 6(1), 15;https://doi.org/10.3390/photonics6010015

13 February 2019

A theoretical model for the responsivity and noise-equivalent power (NEP) of photoconductive antennas (PCAs) as coherent, homodyne THz detectors is presented. The model is validated by comparison to experimental values obtained for two ErAs:InGaAs PC...

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Editorial

9 Citations

4,089 Views

7 Pages

Terahertz as a Frontier Area for Science and Technology

Akinori Irizawa,
Stefano Lupi and
Augusto Marcelli

Condens. Matter2021, 6(3), 23;https://doi.org/10.3390/condmat6030023

28 June 2021

Recent theoretical and experimental research is triggering interest to technologies based on radiation in the region from ~0.1 to 20 Terahertz (THz). Today, this region of the electromagnetic (e.m.) spectrum is a frontier area for research in many di...

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Article

4 Citations

3,135 Views

11 Pages

Full-Field Super-Resolution Terahertz Imaging Based on Rotating Coherent Scattering Microscopy

Duoxuan Ma,
Jie Zhao,
Dayong Wang,
Hao Lin,
Lu Rong,
Yunxin Wang and
Shufeng Lin

Appl. Sci.2023, 13(2), 982;https://doi.org/10.3390/app13020982

11 January 2023

For decades, terahertz (THz) microscopic imaging has been limited by the resolution of the system due to the larger wavelength, the power of the source, and the equivalent noise power of the detector, so a lot of research has focused on single-point...

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Article

8 Citations

2,952 Views

18 Pages

Experimental Realization of 16-Pixel Terahertz Receiver Front-End Based on Bulk Silicon MEMS Power Divider and AlGaN/GaN HEMT Linear Detector Array

Kaiqiang Zhu,
Qingfeng Ding,
Tong Mao,
Xiuming Tang,
Yu Xiao,
Hua Qin and
Houjun Sun

Electronics2022, 11(15), 2305;https://doi.org/10.3390/electronics11152305

23 July 2022

A 16-pixel terahertz (THz) receiver front-end working at room temperature was designed, built, and measured in this paper. The designed receiver front-end is based on the antenna-coupled AlGaN/GaN high-electron-mobility transistor (HEMT) THz linear d...

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Review

1 Citations

2,768 Views

34 Pages

Recent Developments and Applications of Terahertz Spectroscopy in Food Analysis

Pengpeng Yu,
Chaoping Shen,
Wenhui Zhu,
Wenya Zhang,
Junhui Cheng and
Jinxiu Song

Biosensors2025, 15(10), 677;https://doi.org/10.3390/bios15100677

8 October 2025

The terahertz waves are electromagnetic waves with frequencies ranging from 0.1 to 10 THz, exhibiting characteristics of both microwave and infrared, including fingerprint characteristics, coherence, and safety. Due to the weak interactions among mos...

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