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Photonic quasicrystals

Mesophotonics have developed a proprietary range of photonic quasicrystals that provide novel functionality for a broad range of applications. Photonic Quasicrystals are similar to Photonic Crystal but rely on a quasicrystal arrangement of air holes. Quasicrystals possess long-range translation order but short range disorder. Photonic Quasicrystals offer predetermined high symmetry orders not achievable in nature for example 8, 12 or 14 and hence offer the following unique features:


  • Isotropic  Photonic Bandgaps, the forbidden wavelength range resides in the same place for all directions of incident photon propagation.
  • Photonic Quasicrystal operation in low refractive index materials.
  • Flat Dispersion bands.
  • Tailor penetration depth of field into bandgap, formation of bandgap not arising from nearest neighbour air rod interactions.
  • Selectable Diffraction patterns with multiple first order beams (>6).
  • Tailored Far field emission.

 SEM micrographs of fabricated planar  photonic quasicrystal structure.

Multiple beam Diffraction from a fabricated planar photonic quasicrystal structure residing at the bottom of the pictograph while laser light is incident from the top

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