Optical filter based on light-matter coupling in quantum-confined cavity spaces

An optical filter based on light-matter coupling in quantum confined cavity spaces comprising a layer structure comprising a plurality of layers stacked in a thickness direction of the layer structure and including:

• a plurality of nano-photonic layers formed of a nano-photonic material with icosahedral or dodecahedral symmetry, and at least one substrate layer formed of an optically transparent material, the at least one substrate layer being free of nano-photonic material, wherein one of the at least one substrate layer is positioned between two of the plurality of nano-photonic layers in the thickness direction of the layer structure such that a 2D cavity is defined by the layer structure, wherein the 2D cavity is defined by the layer structure satisfying the condition:
• λ
• 2
• ⁢
• π1
• >
• 1
• ,
• wherein λ is a wavelength of visible incident light and l is a thickness of the at least one substrate layer.