Dynamically controlled plasmonic nano-antenna phased array utilizing vanadium dioxide
Optics
2017-02-09 v1
Abstract
We propose and analyze theoretically an approach for realizing a tunable optical phased-array antenna utilizing the properties of VO2 for electronic beam steering applications in the near-IR spectral range. The device is based on a 1D array of slot nano-antennas engraved in a thin Au film grown over VO2 layer. The tuning is obtained by inducing a temperature gradient over the device, which changes the refractive index of the VO2, and hence modifies the phase response of the elements comprising the array, by producing a thermal gradient within the underlying PCM layer. Using a 10-element array, we show that an incident beam can be steered up to with respect to the normal, by applying a gradient of less than 10{\deg}C.
Cite
@article{arxiv.1702.02333,
title = {Dynamically controlled plasmonic nano-antenna phased array utilizing vanadium dioxide},
author = {Gregory Kaplan and Koray Aydin and Jacob Scheuer},
journal= {arXiv preprint arXiv:1702.02333},
year = {2017}
}