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US 2004/0170352 A1Published application
Photonic crystals
AssigneeGeorgia Tech Research Corporation
InventorsChristopher J. Summers, Wounjhang Park
Life of this patent
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Abstract
A photonic crystal includes a phosphor matrix and a plurality of defect regions. The phosphor matrix defines a plurality of substantially spherical voids arranged in a triangular lattice arrangement. The phosphor matrix has a first index of refraction. The plurality of defect regions is distributed in a subset of the spherical voids. Each defect region has a second index of refraction that is different from the first index of refraction.
Claims39
A photonic crystal, comprising:
- a. a phosphor matrix defining a plurality of substantially spherical voids arranged in a lattice arrangement, the phosphor matrix having a first index of refraction;
- and
- b. a plurality of defect regions distributed in a subset of the spherical voids, each defect region having a second index of refraction, different from the first index of refraction.
A method of making a photonic crystal, comprising the steps of:
- a. forcing a plurality of nano-structures and a plurality of defect structures into a lattice, thereby creating a plurality of interstitial spaces;
- b. repeatedly applying, through atomic layer deposition, a plurality of layers of a predetermined optical material to the plurality of nano-structures until the interstitial spaces are substantially filled with the phosphor;
- and
- c. subjecting the nano-structures to a reactant so as to remove the nano-spheres and form the photonic crystal.
1 more element
A beam steering structure, comprising:
- a. a thin film dielectric matrix defining a plurality of evenly spaced-apart voids therein;
- and
- b. a material that modulates optical properties disposed in each one of the voids.
Dependencies are inferred from the claim text.