Design, simulation and measurement of a single-band high-transmittance all-dielectric metamaterial filter

Metamaterial filters are widely used in various photo-electronic devices because of the rich resonance behaviors. Transmission and thermal resonance properties are important factors to measure the performance of photo-electronic devices based on metamaterial filters. It is important to accurate measure the thermal resonance performance of the metasurface to improve the thermal management of these photo-electronic devices, reduce heat loss, and delay device damage. In this paper, a metamaterial filter is proposed and verified in the 0.5–3.0 THz range. A transmission peak of 94.3% at resonance frequency 1.43 THz is achieved by the proposed filter samples at room temperature. The thermal diffusivity (8.28) and thermal resistance (7.58) of the metasurface are measured by using thermal pulses, which can be improved effectively by separating the sample and the standard substrate with a resin layer (TIM layer). The intensities of the applied electric field and heat pulse have significant influence on the thermal diffusivity and thermal resistance of the metasurface. When the electric field exceeds 42 km/mm or the heat pulse exceeds 1.3 mJ, the thermal diffusivity and resistance of the metasurface appear obvious divergence phenomenon. Moreover, the thermal resonance properties of the proposed sample is higher than that of the stacked plate structure.