Tunable photonic crystal

Details Tunable photonic crystal Tunable photonic crystal

2009-02-19

2010-11-02

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

C250S493100, C257S098000

Reexamination Certificate

active

07825380

ABSTRACT:
An infrared emitter, which utilizes a photonic crystal (PC) structure to produce electromagnetic emissions with a narrow hand of wavelengths, includes a semiconductor material layer, a dielectric material layer overlaying the semiconductor material layer, and a metallic material layer having an inner side overlaying the dielectric material layer. The semiconductor material layer is capable of being coupled to an energy source for introducing energy to the semiconductor material layer. An array of surface features are defined in the device in a periodic manner or quasi-periodic. The emitter device is adapted to emit electromagnetic energy having spectral characteristics determined by parameters of the periodically distributed surface features, the parameters including shape, size, depth, distribution geometry, periodicity, material properties and defects.

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