Terahertz (THz) technology is a promising research field for various applications in basic science and technology. In particular, THz imaging is a new field in imaging science, where theories, mathematical models and techniques for describing and assessing THz images have not completely matured yet. In this work, we investigate the performances of a broadband pulsed THz imaging system (0.2–2.5 THz). We characterize our broadband THz beam, emitted from a photoconductive antenna (PCA), and estimate its point spread function (PSF) and the corresponding spatial resolution. We provide the first, to our knowledge, 3D beam profile of THz radiation emitted from a PCA, along its propagation axis, without the using of THz cameras or profilers, showing the beam spatial intensity distribution. Finally, we evaluate the THz image formation on a test-sample composed by a regular linen natural pattern.

Performance Evaluation of a THz Pulsed Imaging System: Point Spread Function, Broadband THz Beam Visualization and Image Reconstruction / Di Fabrizio, Marta; D’Arco, Annalisa; Mou, Sen; Palumbo, Luigi; Petrarca, Massimo; Lupi, Stefano. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 11:2(2021), p. 562. [10.3390/app11020562]

Performance Evaluation of a THz Pulsed Imaging System: Point Spread Function, Broadband THz Beam Visualization and Image Reconstruction

Di Fabrizio, Marta;D’Arco, Annalisa;Palumbo, Luigi;Petrarca, Massimo;Lupi, Stefano
2021

Abstract

Terahertz (THz) technology is a promising research field for various applications in basic science and technology. In particular, THz imaging is a new field in imaging science, where theories, mathematical models and techniques for describing and assessing THz images have not completely matured yet. In this work, we investigate the performances of a broadband pulsed THz imaging system (0.2–2.5 THz). We characterize our broadband THz beam, emitted from a photoconductive antenna (PCA), and estimate its point spread function (PSF) and the corresponding spatial resolution. We provide the first, to our knowledge, 3D beam profile of THz radiation emitted from a PCA, along its propagation axis, without the using of THz cameras or profilers, showing the beam spatial intensity distribution. Finally, we evaluate the THz image formation on a test-sample composed by a regular linen natural pattern.
2021
THz radiation; THz pulsed imaging; point spread function; spatial resolution; THz 3D beam
01 Pubblicazione su rivista::01a Articolo in rivista
Performance Evaluation of a THz Pulsed Imaging System: Point Spread Function, Broadband THz Beam Visualization and Image Reconstruction / Di Fabrizio, Marta; D’Arco, Annalisa; Mou, Sen; Palumbo, Luigi; Petrarca, Massimo; Lupi, Stefano. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 11:2(2021), p. 562. [10.3390/app11020562]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1473764
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