A 128-Pixel System-on-a-Chip for Real-Time Super-Resolution Terahertz Near-Field Imaging

Hillger, Philipp; Jain, Ritesh; Grzyb, Janusz; Förster, Wolfgang; Heinemann, B.; MacGrogan, Gaëtan; Mounaix, Patrick; Zimmer, Thomas; Pfeiffer, Ullrich R.

doi:10.1109/jssc.2018.2878817

Cited by 29 publications

(11 citation statements)

References 38 publications

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“…Furthermore, advantages of silicon technologies bring the ability to form large detector arrays which can be used for imaging applications [153][154][155][156]. Moreover, the availability of both types of components, i.e., sources and detectors, makes it possible to realize allelectronic silicon-based applications spanning from raster-scan imaging [146,157] to near field imaging [158]. It is worth mentioning a very recent study [159] dedicated to the sensitivity issues of nanometric field effect transistors as THz sensors.…”

Section: Field Effect Transistor-based Detectorsmentioning

confidence: 99%

Roadmap of Terahertz Imaging 2021

Valušis

Lisauskas

Yuan

et al. 2021

Sensors

174

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In this roadmap article, we have focused on the most recent advances in terahertz (THz) imaging with particular attention paid to the optimization and miniaturization of the THz imaging systems. Such systems entail enhanced functionality, reduced power consumption, and increased convenience, thus being geared toward the implementation of THz imaging systems in real operational conditions. The article will touch upon the advanced solid-state-based THz imaging systems, including room temperature THz sensors and arrays, as well as their on-chip integration with diffractive THz optical components. We will cover the current-state of compact room temperature THz emission sources, both optolectronic and electrically driven; particular emphasis is attributed to the beam-forming role in THz imaging, THz holography and spatial filtering, THz nano-imaging, and computational imaging. A number of advanced THz techniques, such as light-field THz imaging, homodyne spectroscopy, and phase sensitive spectrometry, THz modulated continuous wave imaging, room temperature THz frequency combs, and passive THz imaging, as well as the use of artificial intelligence in THz data processing and optics development, will be reviewed. This roadmap presents a structured snapshot of current advances in THz imaging as of 2021 and provides an opinion on contemporary scientific and technological challenges in this field, as well as extrapolations of possible further evolution in THz imaging.

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Section: Field Effect Transistor-based Detectorsmentioning

confidence: 99%

Roadmap of Terahertz Imaging 2021

Valušis

Lisauskas

Yuan

et al. 2021

Sensors

174

View full text Add to dashboard Cite

show abstract

“…Nevertheless, there have been studies showing near-field THz imaging of biosamples. 56,[86][87][88][89][90][91][92][93][94][95] These references use different systems and will be discussed below.…”

Section: Microscopy and The Near-fieldmentioning

confidence: 99%

Terahertz (THz) biophotonics technology: Instrumentation, techniques, and biomedical applications

Chen

Lindley-Hatcher

Stantchev

et al. 2022

Chemical Physics Reviews

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Terahertz (THz) technology has experienced rapid development in the past two decades. Growing numbers of interdisciplinary applications are emerging, including materials science, physics, communications, and security as well as biomedicine. THz biophotonics involves studies applying THz photonic technology in biomedicine, which has attracted attention due to the unique features of THz waves, such as the high sensitivity to water, resonance with biomolecules, favorable spatial resolution, capacity to probe the water–biomolecule interactions, and nonionizing photon energy. Despite the great potential, THz biophotonics is still at an early stage of development. There is a lack of standards for instrumentation, measurement protocols, and data analysis, which makes it difficult to make comparisons among all the work published. In this article, we give a comprehensive review of the key findings that have underpinned research into biomedical applications of THz technology. In particular, we will focus on the advances made in general THz instrumentation and specific THz-based instruments for biomedical applications. We will also discuss the theories describing the interaction between THz light and biomedical samples. We aim to provide an overview of both basic biomedical research as well as pre-clinical and clinical applications under investigation. The paper aims to provide a clear picture of the achievements, challenges, and future perspectives of THz biophotonics.

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“…A specific antenna design with a wider beamwidth is required for SAR imaging instead of a conventional horn antenna. In addition, the numerical calculations and imaging algorithms can change the spatial resolution; more complicated algorithms, such as compressed sensing and deconvolution techniques can be introduced to THz imaging to enhance the spatial resolution [37]- [40].…”

Section: B Synthetic Aperture Imaging Experimentsmentioning

confidence: 99%

Ultra-Wideband Frequency Modulated Continuous Wave Photonic Radar System for Three-Dimensional Terahertz Synthetic Aperture Radar Imaging

Kaname

Mizuno

et al. 2022

J. Lightwave Technol.

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Three-dimensional (3D) imaging remains an expensive and challenging task in the THz band. In this study, a frequency-modulated continuous-wave photonic radar system was presented in the 300-GHz band, instead of using electronic-based devices. The proposed system can obtain a 6-dB bandwidth of 120 GHz to achieve a range resolution of ~1.1 mm. The frequency sweep linearity of a laser source was calibrated with respect to the imaging distance and range resolution, through which a maximum detectable distance of ~800 mm was achieved with the collimated beam. To obtain the desired 3D information, the synthetic aperture radar (SAR) technique was introduced to the proposed system to achieve 3D imaging, which was not bounded by the fixed focal distance of a focus lens. It can provide a spatial resolution of ~1.5 mm within a 3D imaging range up to ~300 mm. The potential and limitations of SAR imaging schemes are discussed based on the theoretical and experimental results.

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A 128-Pixel System-on-a-Chip for Real-Time Super-Resolution Terahertz Near-Field Imaging

Cited by 29 publications

References 38 publications

Roadmap of Terahertz Imaging 2021

Roadmap of Terahertz Imaging 2021

Terahertz (THz) biophotonics technology: Instrumentation, techniques, and biomedical applications

Ultra-Wideband Frequency Modulated Continuous Wave Photonic Radar System for Three-Dimensional Terahertz Synthetic Aperture Radar Imaging

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