Optical Response of Nanohole Arrays Filled with Chalcogenide Low‐Epsilon Media
Source abstract
Abstract
Abstract When an array of subwavelength apertures in a metal film is filled with a chalcogenide semiconductor acting as a low‐epsilon medium at optical frequencies, an increase in transmission is observed over a broad range of plasmonic frequencies, and found to be enabled by “laminar” flow of energy through the chalcogenide inclusions. As losses decrease in such a low‐epsilon medium, with causality‐bound dispersion of complex relative permittivity, a peak in transmission emerges at a wavelength tending toward that of unitary refractive index, while counterintuitively the absorption of the composite structure increases.
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Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Photonic Crystals and Applications · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Optoelectronics Research Centre and Centre for Photonic Metamaterials University of Southampton Southampton SO17 1BJ UK
Department of Chemistry University of Southampton Southampton SO17 1BJ UK
Centre for Disruptive Photonic Technologies & The Photonics Institute School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
Funding
Engineering and Physical Sciences Research Council · Ministry of Education - Singapore
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