From Event: SPIE Commercial + Scientific Sensing and Imaging, 2017
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.
Willie J. Padilla, "Advanced terahertz imaging with electromagnetic metamaterials (Conference Presentation)," Proc. SPIE 10209, Image Sensing Technologies: Materials, Devices, Systems, and Applications IV, 1020902 (Presented at SPIE Commercial + Scientific Sensing and Imaging: April 12, 2017; Published: 9 June 2017); https://doi.org/10.1117/12.2264750.5460418212001.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 14,000 conference presentations, including many plenary and keynote presentations.