Patent ID: 7098589

Claim:
A light-emitting device, comprising: a multi-layer stack of materials including a light-generating region and a first layer supported by the light-generating region; and a support; wherein: the light-generating region is between the first layer and the support; a surface of the first layer is configured so that light generated by the light-generating region can emerge from the light-emitting device via the surface of the first layer; the surface of the first layer has a dielectric function that varies spatially according to a pattern; the pattern is formed of holes in the surface of the first layer; the pattern is configured so that light generated by the light-generating region that emerges from the light-emitting device via the surface of the first layer is more collimated than a Lambertian distribution of light; and the pattern has an ideal lattice constant and a detuning parameter with a value greater than zero.