Patent ID: 7697588
Filing Date: 2010-04-13
Classification: B82Y,G02B,H01S

Abstract:
1. A structure having a photonic crystal, the structure comprising: a photonic crystal layer that includes a flat first member and plural pillars arrayed periodically in two dimensions on the first member and formed of a first material having a first refractive index n a low refractive index layer adjacent to the photonic crystal layer and formed of a second material having a second refractive index n wherein a relative refractive index difference between the first refractive index and the second refractive index Δn(=(n wherein a height h of the pillars is not less than 0.10 t and does not exceed 0.70 t, t being a thickness of the photonic crystal layer and t being greater than or equal to 0.9 a, and a being a lattice constant of the photonic crystal layer, and wherein a radius r of a pillar is greater than or equal to 0.45 a.