Imaging and steering an optical wireless nanoantenna link

Daniel Dregely, Klas Lindfors, Markus Lippitz, Nader Engheta, Michael Totzeck and Harald Giessen ()
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Daniel Dregely: 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57
Klas Lindfors: 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57
Markus Lippitz: 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57
Nader Engheta: University of Pennsylvania, 200 South 33rd Street – ESE 203 Moore
Michael Totzeck: Corporate Research and Technology, Carl Zeiss AG, Carl-Zeiss-Strasse 22
Harald Giessen: 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Optical nanoantennas tailor the transmission and reception of optical signals. Owing to their capacity to control the direction and angular distribution of optical radiation over a broad spectral range, nanoantennas are promising components for optical communication in nanocircuits. Here we measure wireless optical power transfer between plasmonic nanoantennas in the far-field and demonstrate changeable signal routing to different nanoscopic receivers via beamsteering. We image the radiation pattern of single-optical nanoantennas using a photoluminescence technique, which allows mapping of the unperturbed intensity distribution around plasmonic structures. We quantify the distance dependence of the power transmission between transmitter and receiver by deterministically positioning nanoscopic fluorescent receivers around the transmitting nanoantenna. By adjusting the wavefront of the optical field incident on the transmitter, we achieve directional control of the transmitted radiation over a broad range of 29°. This enables wireless power transfer from one transmitter to different receivers.

Date: 2014
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DOI: 10.1038/ncomms5354

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