| 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. |