Journal
JOURNAL OF NANOPHOTONICS
Volume 6, Issue -, Pages -Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.JNP.6.063532
Keywords
antenna; metasurface; out-of-plane; plasmonics; phase discontinuities; refraction
Categories
Funding
- Defense Advanced Research Projects Agency (DARPA) N/MEMS S&T Fundamentals program [N66001-10-1-4008]
- Space and Naval Warfare Systems Center Pacific (SPAWAR)
- National Science Foundation
- Harvard Nanoscale Science and Engineering Center (NSEC) [NSF/PHY 06-46094]
- Center for Nanoscale Systems (CNS) at Harvard University
- Robert A. Welch Foundation [A-1261]
- European Communities Seventh Framework Programme [PIOF-GA-2009-235860]
- National Science Foundation through a Graduate Research Fellowship
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A three-dimensional extension of the recently demonstrated generalization of the laws of refraction and reflection was investigated for both flat and curved metasurfaces. We found that out-of-plane refraction occurs for a metasurface that imparts a wavevector out of the plane of incidence onto the incident light beam. Metasurfaces provide arbitrary control over the direction of refraction, and yield new critical angles for both reflection and refraction. A spherical metasurface with phase discontinuities leads to unconventional light bending compared to standard refractive lenses. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.JNP.6.063532]
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