Details

Autor(en) / Beteiligte

• Tripathi, Saroj R
• Sugiyama, Yuya
• Murate, Kosuke
• Imayama, Kazuki
• Kawase, Kodo

Titel

Terahertz wave three-dimensional computed tomography based on injection-seeded terahertz wave parametric emitter and detector

Ist Teil von

• Optics express, 2016-03, Vol.24 (6), p.6433-6440

Ort / Verlag

United States

Erscheinungsjahr

2016

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• We demonstrate a high dynamic range, three-dimensional (3-D) terahertz (THz) wave computed tomography system in which frequency tunable, Fourier transform-limited, high-power THz waves are emitted by an injection-seeded parametric source and ultrasensitive detection of THz waves is accomplished by heterodyne detection. This system covers the frequency range of 0.95 to 2.7 THz and has a maximum dynamic range in excess of nine orders of magnitude, enabling the acquisition of high-resolution 3-D tomographic images of samples with strong THz absorption. As an illustration, we obtained 3-D computed tomographic images of a pencil and a plastic product with an internal defect that demonstrates the potential applications of our imaging system in non-destructive testing and evaluation of industrial products.