Broadband Terahertz Computed Tomography Using a 5k-pixel Real-time THz Camera

Trichopoulos, Georgios C.; Sertel, Kubilay

doi:10.1007/s10762-015-0144-x

Cited by 16 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The long image acquisition time currently constitutes the main issue to adopt THz-CT as a tool for industrial quality control, where scanning times of several minutes are still unacceptable. Yet, rapid THz-CT volume acquisition within seconds has been readily demonstrated by 1-D and 2-D collimated beam object illumination with nonsilicon high-power sources and concurrent FPA detection [105], [106].…”

Section: A Computed Tomography (Ct)mentioning

confidence: 99%

Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Hillger

Grzyb

Jain

et al. 2019

IEEE Trans. THz Sci. Technol.

294

108

View full text Add to dashboard Cite

Traditional terahertz (THz) equipment faces major obstacles in providing the system cost and compactness necessary for widespread deployment of THz applications. Because of this, the field of THz integrated circuit (THz IC) design in CMOS and SiGe HBT technologies has surged in the last decade. An interplay of advances in silicon process technology, design technique, and microelectronic packaging promises to narrow the gap between the requirements and the reality of system cost and performance of THz components. Furthermore, the scalability, reconfigurability, and signal processing features of silicon technology have initiated research in complex THz ICs that expand the functionality of THz systems; this has enabled new applications, methods, and algorithms. This paper reviews the progress in THz IC research and investigates several realizations of THz imaging and sensing applications with silicon-based components regarding their motivation, system performance, and challenges. THz computed tomography, broadband multicolor imaging, high-resolution FMCW radar imaging, subwavelength resolution near-field imaging, and compressed sensing are presented.

show abstract

Section: A Computed Tomography (Ct)mentioning

confidence: 99%

Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Hillger

Grzyb

Jain

et al. 2019

IEEE Trans. THz Sci. Technol.

294

108

View full text Add to dashboard Cite

show abstract

“…Examples of THz tomography imaging have been reported to date using THz pulsed [1,[6][7][8], or continuous wave (CW) sources [1,[9][10][11]. Results achieved by time-of-flight or phase contrast with pulsed sources are the most convincing yet.…”

Section: Introductionmentioning

confidence: 99%

Hyperspectral Terahertz Tomography in Amplitude Contrast

Banuelos-Saucedo

Ozanyan

2019

IEEE Sensors J.

View full text Add to dashboard Cite

Hyperspectral tomography in THz amplitude contrast is presented using a time-domain spectroscopy system in the spectral range 0.3-2.5 THz. The Fourier transformed signal data is used to reconstruct test objects' cross-sections at multiple frequencies using standard filtered backprojection. The full hyperspectral set of images reconstructed at around 300 adjacent spectral points is used to trace the combined contribution of Beer-Lambert volume attenuation, Fresnel reflection losses and Rayleigh roughness scattering losses, which is in good overall agreement with the experimental results. The image quality for Styrofoam (refractive index around 1.02, attenuation coefficient < 1 mm-1) test objects is best in the range 0.8-2.0 THz depending on the porosity of the material.

show abstract

“…Several approaches for THz-CT have been reported in the literature [12,18,31], often based on intensity measurements using continuous wave (cw) technology [25,29] in the 100 GHz regime. These systems typically offer far more output power and therefore the potential for imaging larger objects, but on the other hand their diffraction limited resolution is lower.…”

mentioning

confidence: 99%

A mathematical approach towards THz tomography for non-destructive imaging

Hubmer¹,

Ploier²,

Ramlau³

et al. 2022

IPI

View full text Add to dashboard Cite

In this paper, we consider the imaging problem of terahertz (THz) tomography, in particular as it appears in non-destructive testing. We derive a nonlinear mathematical model describing a full THz tomography experiment, and consider linear approximations connecting THz tomography with standard computerized tomography and the Radon transform. Based on the derived models we propose different reconstruction approaches for solving the THz tomography problem, which we then compare on experimental data obtained from THz measurements of a plastic sample.

show abstract

Broadband Terahertz Computed Tomography Using a 5k-pixel Real-time THz Camera

Cited by 16 publications

References 21 publications

Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Hyperspectral Terahertz Tomography in Amplitude Contrast

A mathematical approach towards THz tomography for non-destructive imaging

Contact Info

Product

Resources

About