scholarly journals Sub-wavelength continuous THz imaging system based on interferometric detection

2021 ◽  
Author(s):  
Yesenia García-Jomaso ◽  
Dahi Hernández-Roa ◽  
Jesus Garduño-Mejia ◽  
Carlos Treviño-Palacios ◽  
Oleg Kolokoltsev ◽  
...  
Keyword(s):  
Imaging System ◽  
Thz Imaging ◽  
Interferometric Detection ◽  
Sub Wavelength

scholarly journals BWO based THz imaging system

2014 ◽  
Vol 486 ◽  
pp. 012027 ◽  
Author(s):  
Artem N Perov ◽  
Kirill I Zaytsev ◽  
Irina N Fokina ◽  
Valeriy E Karasik ◽  
Egor V Yakovlev ◽  
...  
Keyword(s):  
Imaging System ◽  
Thz Imaging

scholarly journals A Hybrid THz Imaging System With a 100-Pixel CMOS Imager and a 3.25–3.50 THz Quantum Cascade Laser Frequency Comb

2019 ◽  
Vol 2 (9) ◽  
pp. 151-154 ◽  
Author(s):  
T. J. Smith ◽  
Anna Broome ◽  
Daniel Stanley ◽  
Jonas Westberg ◽  
Gerard Wysocki ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Imaging System ◽  
Frequency Comb ◽  
Laser Frequency ◽  
Thz Imaging ◽  
Quantum Cascade ◽  
Cmos Imager

scholarly journals THz Reflective Imaging System Utilizing Broadband Homodyne Amplification for Artifact-Free See-Through Imaging

2020 ◽  
Vol 10 (20) ◽  
pp. 7228
Author(s):  
Kiwon Moon ◽  
Il-Min Lee ◽  
Eui Su Lee ◽  
Kyung Hyun Park
Keyword(s):  
Signal Amplification ◽  
Continuous Wave ◽  
Imaging System ◽  
Imaging Techniques ◽  
Thz Imaging ◽  
Material Loss ◽  
Frequency Dependent ◽  
Imaging Capability ◽  
Technical Issues ◽  
Non Destructive

Terahertz (THz) technology offers unique see-through imaging capability for various non-destructive inspection applications. In this work, we implemented a broadband continuous-wave THz imaging system to study technical issues related to the see-through imaging, including frequency-dependent resolution, material loss, and interference-induced artifacts. The interference-induced false contrast and artifacts were observed, which were suppressed by broadband imaging techniques adopting the homodyne signal amplification by interferometric setup to overcome the material loss.

A compact THz imaging system

2015 ◽  
Author(s):  
Aleksander Sešek ◽  
Andrej Švigelj ◽  
Janez Trontelj
Keyword(s):  
Imaging System ◽  
Thz Imaging

scholarly journals Fourier optics approach to imaging with sub-wavelength resolution through metal-dielectric multilayers

2010 ◽  
Vol 18 (4) ◽  
Author(s):  
R. Kotyński
Keyword(s):  
Point Spread Function ◽  
Imaging System ◽  
Diffraction Theory ◽  
Spatial Filter ◽  
Fourier Optics ◽  
Point Spread ◽  
Spread Function ◽  
Point Spread Function Engineering ◽  
Wavelength Resolution ◽  
Sub Wavelength

AbstractMetal-dielectric layered stacks for imaging with sub-wavelength resolution are regarded as linear isoplanatic systems — a concept popular in Fourier optics and in scalar diffraction theory. In this context, a layered flat lens is a one-dimensional spatial filter characterised by the point spread function. However, depending on the model of the source, the definition of the point spread function for multilayers with sub-wavelength resolution may be formulated in several ways. Here, a distinction is made between a soft source and hard electric or magnetic sources. Each of these definitions leads to a different meaning of perfect imaging. It is shown that some simple interpretations of the PSF, such as the relation of its width to the resolution of the imaging system are ambiguous for the multilayers with sub-wavelenth resolution. These differences must be observed in point spread function engineering of layered systems with sub-wavelength sized PSF.

Active THz imaging system with improved frame rate

2009 ◽  
Author(s):  
W. von Spiegel ◽  
C. am Weg ◽  
R. Henneberger ◽  
R. Zimmermann ◽  
T. Loeffler ◽  
...  
Keyword(s):  
Imaging System ◽  
Frame Rate ◽  
Thz Imaging

Reflective terahertz (THz) imaging: system calibration using hydration phantoms

2013 ◽  
Author(s):  
Neha Bajwa ◽  
James Garritano ◽  
Yoon Kyung Lee ◽  
Priyamvada Tewari ◽  
Shijun Sung ◽  
...  
Keyword(s):  
Imaging System ◽  
Thz Imaging ◽  
System Calibration
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