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The design of plasmonic stack metamaterials (PSMs) is critical due to their promising potentials in the fields of optical absorbers, sensors, and thermal irradiation. Compared with the classical circuit‐based optimization, the design by deep learning (DL) has attracted greater attention, since it is not essential to obtain their equivalent circuit parameters. Currently, a DL model for their higher‐precision...
We report NEMS-based reconfigurable photonic metamaterials controlled by electrical currents, magnetic fields and light. Our structures provide practically useful solutions for sub-megahertz and high contrast magnetoelectric modulation of metamaterial optical properties and a cubic optical nonlinearity that is ten orders of magnitude greater than the reference nonlinearity of CS2.
We demonstrate the first reconfigurable photonic metamaterial controlled by electrical currents and magnetic fields, providing first practically useful solutions for sub-megahertz and high contrast modulation of metamaterial optical properties.
We demonstrate metamaterial with a cubic optical nonlinearity that is ten orders of magnitude greater than the reference nonlinearity of CS2. The nonlinearity has optomechanical nature and is underpinned by light-induced electromagnetic near-field interactions.
Plasmonic resonances are observed in metamaterials made of a topological insulator, Bi1.5Sb0.5Te1.8Se1.2, at the UV and visible frequencies due to the material's interband transition and nontrivial surface conducting state.
For more than ten years now, significant effort has been focused on the engineering of metamaterials to achieve artificial optical magnetism, most notably for applications in negative refractive media. However, the challenges associated with the fact that the metals conventionally employed as the foundation of photonic metamaterials suffer from high inherent energy dissipation due to resistive losses...
Periodic nanostructuring can enhance the optical nonlinearity of plasmonic metals by several orders of magnitude. By patterning a gold film, the largest sub‐100 femtosecond nonlinearity is achieved, which is suitable for terahertz rate all‐optical data processing as well as ultrafast optical limiters and saturable absorbers.
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