Binary mask scanning for THz imaging

Dan C. Popescu; Andrew D. Hellicar; Li Li; Yue Li; Grahame C. Rosolen; Greg Hislop

doi:10.1117/12.819007

30 April 2009 Binary mask scanning for THz imaging

Dan C. Popescu, Andrew D. Hellicar, Li Li, Yue Li, Grahame C. Rosolen, Greg Hislop

Proceedings Volume 7311, Terahertz Physics, Devices, and Systems III: Advanced Applications in Industry and Defense; 73110W (2009) https://doi.org/10.1117/12.819007
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

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.

Citation Download Citation

Dan C. Popescu, Andrew D. Hellicar, Li Li, Yue Li, Grahame C. Rosolen, and Greg Hislop "Binary mask scanning for THz imaging", Proc. SPIE 7311, Terahertz Physics, Devices, and Systems III: Advanced Applications in Industry and Defense, 73110W (30 April 2009); https://doi.org/10.1117/12.819007

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