Advanced terahertz imaging with electromagnetic metamaterials (Conference Presentation)

Willie J. Padilla

doi:10.1117/12.2264750

9 June 2017 Advanced terahertz imaging with electromagnetic metamaterials (Conference Presentation)

Willie J. Padilla

Proceedings Volume 10209, Image Sensing Technologies: Materials, Devices, Systems, and Applications IV; 1020902 (2017) https://doi.org/10.1117/12.2264750
Event: SPIE Commercial + Scientific Sensing and Imaging, 2017, Anaheim, CA, United States

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.

Conference Presentation

Citation Download Citation

Willie J. Padilla "Advanced terahertz imaging with electromagnetic metamaterials (Conference Presentation)", Proc. SPIE 10209, Image Sensing Technologies: Materials, Devices, Systems, and Applications IV, 1020902 (9 June 2017); https://doi.org/10.1117/12.2264750

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