Mid-infrared tunable metamaterials
| DWPI Title: Metamaterial tunable within operating frequency range used in e.g. thermal imaging applications, comprises doped indium antimonide substrate, array of resonators tunable over specified frequency, gate dielectric layer and circuit |
| Abstract: A mid-infrared tunable metamaterial comprises an array of resonators on a semiconductor substrate having a large dependence of dielectric function on carrier concentration and a semiconductor plasma resonance that lies below the operating range, such as indium antimonide. Voltage biasing of the substrate generates a resonance shift in the metamaterial response that is tunable over a broad operating range. The mid-infrared tunable metamaterials have the potential to become the building blocks of chip based active optical devices in mid-infrared ranges, which can be used for many applications, such as thermal imaging, remote sensing, and environmental monitoring. |
| Use: Metamaterial tunable within operating frequency range is used in thermal imaging, remote sensing, and environmental monitoring applications. |
| Advantage: The metamaterials tunable within operating frequency range, preferably in mid-infrared, have the potential to become the building blocks of chip based active optical devices in mid-infrared ranges. |
| Novelty: A metamaterial (20) tunable within an operating frequency range, comprises a doped indium antimonide substrate (12) having a large dependence of dielectric function on the carrier concentration and semiconductor plasma resonance below operating frequency range, an array of resonators (11) tunable over a frequency range of 100-15 THz (3-20 μ m wavelength), a gate dielectric layer (16) between the resonator array and the substrate, and an electrical circuit (15) for modulating the carrier concentration of the substrate and tuning the resonance of the resonator array. |
| Filed: 12/10/2010 |
| Application Number: US2010965659A |
| Tech ID: SD 11517.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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