Electro-Optical Switching in a Nonlinear Metasurface
Nonlinear metasurfaces are multifunctional photonic elements that generate and control light, enabling multiple proof-of-principle applications, such as in nonlinear holography, beam shaping, and nanoscale sources of entangled photon pairs. Active tuning of nonlinear metasurfaces will considerably e...
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Main Authors | , , |
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Format | Journal Article |
Language | English |
Published |
22.07.2024
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Subjects | |
Online Access | Get full text |
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Summary: | Nonlinear metasurfaces are multifunctional photonic elements that generate
and control light, enabling multiple proof-of-principle applications, such as
in nonlinear holography, beam shaping, and nanoscale sources of entangled
photon pairs. Active tuning of nonlinear metasurfaces will considerably expand
their prospects for integrated photonics. Here, we demonstrate a highly-tunable
metasurface device that combines electrical and optical switching in a
broadband frequency conversion process. Our device employs electrically tunable
hybrid graphene-gold plasmons to convert mid-infrared pulses into visible light
by optical gating. A strong electrical modulation of the generated visible
light is attained for a broad range of mid-infrared input frequencies, and this
modulation is up to 3.5x stronger for the metasurface than for plain graphene.
All-optical switching measurements indicate that the device can be optically
switched at Terahertz rates. Our results may lead to new applications of
metasurfaces such as ultrafast signal processing, nonlinear sensing, and
optical transduction. |
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DOI: | 10.48550/arxiv.2407.16112 |