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Advanced terahertz imaging with electromagnetic metamaterials (Conference Presentation)
Author(s): Willie J. Padilla

Paper Abstract

The utilization of metamaterials as spatial light modulators (SLMs) offers a new route to achieve reconfigurable single pixel imaging systems. Here we demonstrate a metamaterial SLM hat permits high speed imaging at terahertz frequencies using communications engineering techniques. Specifically we implement quadrature amplitude modulation (QAM) with our all-electronic metamaterial SLM, which enables a doubling of the imaging frame rate. A second independent technique of frequency diverse imaging uses a number of sub-carriers to permit parallelization of the imaging process, which results in an increase in imaging speed only limited by signal to noise. Our results are not limited to the terahertz band, but may be scaled to nearly any sub-optical range of the electromagnetic spectrum, and verify the potential of metamaterials to operate as reconfigurable multifunctional devices which will enable next generation imaging systems.

Paper Details

Date Published: 9 June 2017
PDF: 1 pages
Proc. SPIE 10209, Image Sensing Technologies: Materials, Devices, Systems, and Applications IV, 1020902 (9 June 2017); doi: 10.1117/12.2264750
Show Author Affiliations
Willie J. Padilla, Duke Univ. (United States)


Published in SPIE Proceedings Vol. 10209:
Image Sensing Technologies: Materials, Devices, Systems, and Applications IV
Nibir K. Dhar; Achyut K. Dutta, Editor(s)

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