Polarization selective dual frequency metasurface-based resonant thermal terahertz emitters on n-GaAs/GaAs

Thermal metamaterial-based emitters on GaAs with rectangular metacell shape allowing for resonant polarization selective dual frequency emission in THz range were investigated. Structure was grown by MBE and top metasurface was formed by UV laser lithography. The dual frequency resonant emission was experimentally demonstrated with possibility to resolve different frequencies and different polarization in THz range. Such emitter could be used in THz imaging systems where polarization resolution is required.