Journal
NANO LETTERS
Volume 14, Issue 5, Pages 2485-2490Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl5001696
Keywords
Nanoantenna; metamaterials; localized surface plasmon; holography; coupled patch-dipole antennas
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Funding
- Israeli DoD
- Ministry of economics
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We demonstrate wide-angle, broadband, and efficient reflection holography by utilizing coupled dipole-patch nanoantenna cells to impose an arbitrary phase profile on the reflected light. High-fidelity images were projected at angles of 45 and 200 with respect to the impinging light with efficiencies ranging between 40-50% over an optical bandwidth exceeding 180 nm. Excellent agreement with the theoretical predictions was found at a wide spectral range. The demonstration of such reflectarrays opens new avenues toward expanding the limits of large-angle holography.
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