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Proceedings Paper

Binary mask scanning for THz imaging
Author(s): Dan C. Popescu; Andrew D. Hellicar; Li Li; Yue Li; Grahame C. Rosolen; Greg Hislop
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Paper Abstract

We have designed a terahertz imaging system, built with electronic components and operating at a single tunable frequency. The system scans in hybrid mode, combining coarse mechanical positioning with a fine scan produced by perturbing the beam with a system of opaque masks, placed into the collimated beam. The mask set is based on a modified Hadamard design, which aims at minimizing the loss of power and noise effects. The image acquisition is performed in transmission mode, with the sample placed at the focal plane. We present several imaging results obtained using our technique.

Paper Details

Date Published: 30 April 2009
PDF: 8 pages
Proc. SPIE 7311, Terahertz Physics, Devices, and Systems III: Advanced Applications in Industry and Defense, 73110W (30 April 2009); doi: 10.1117/12.819007
Show Author Affiliations
Dan C. Popescu, Commonwealth Scientific and Industrial Research Organisation (Australia)
Andrew D. Hellicar, Commonwealth Scientific and Industrial Research Organisation (Australia)
Li Li, Commonwealth Scientific and Industrial Research Organisation (Australia)
Yue Li, Commonwealth Scientific and Industrial Research Organisation (Australia)
Grahame C. Rosolen, Commonwealth Scientific and Industrial Research Organisation (Australia)
Greg Hislop, Commonwealth Scientific and Industrial Research Organisation (Australia)


Published in SPIE Proceedings Vol. 7311:
Terahertz Physics, Devices, and Systems III: Advanced Applications in Industry and Defense
Mehdi Anwar; Nibir K. Dhar; Thomas W. Crowe, Editor(s)

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