Abstract
A novel continuous-wave THz imaging system based on the coherent recording of the Fourier space spectrum (FSS) with heterodyne detection is described. The system consists of two 300-GHz electrical multiplier-chain sources with a slight frequency offset, and a single narrow-band TeraFET detector working in raster-scanning mode. The complex-valued FSS is recorded in either the focal-plane or in the free space of the optical system in focusing and non-focusing mode, respectively. Two- and three-dimensional (2D and 3D) images are reconstructed numerically with an inverse Fourier transform algorithm. With a 80 × 80-mm2 detection area and 1-mm2 sampling steps, 1-mm resolution and 76.2×76.2-mm2 image area are achieved.
Original language | English |
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Title of host publication | 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 |
Publisher | Institute of Electrical and Electronics Engineers |
Number of pages | 2 |
ISBN (Electronic) | 978-1-5386-8285-2 |
DOIs | |
Publication status | Published - 21 Oct 2019 |
Externally published | Yes |
Event | 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France Duration: 1 Sept 2019 → 6 Sept 2019 |
Conference
Conference | 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 |
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Abbreviated title | IRMMW-THz 2019 |
Country/Territory | France |
City | Paris |
Period | 1/09/19 → 6/09/19 |