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Resonance Splitting and Enhanced Optical Nonlinearities in ITO-based Epsilon-near-zero Metasurface with Cross-shaped Nanoantennas

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Abstract

We experimentally demonstrate a strong-coupling-induced resonance splitting in indium-tin-oxide (ITO) based epsilon-near-zero (ENZ) metasurface with cross-shaped nanoantennas. An ~11-nm blue shift of the carrier wavelength is observed for this metasurface under ~4-GW/cm2 peak-power density.

© 2019 The Author(s)

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