New work by I. Grigelionis et al. was published in the scientific journal Sensors from MDPI publisher. Authors report on the experimental evidence of thermal terahertz emission tailored by magnetic polariton excitations in entirely GaAs-based structures equipped with metasurfaces. Thermal emission was measured at 390 C temperature in the range from 0.7 THz to 1.3 THz, depending on the size of the square metacells.
The magnetic polariton resonance quality factors obtained at elevated temperatures (Q ~ 3.3 to 5.2) are very similar to those of MIM structures as well as to 2D plasmon resonance quality at cryogenic temperatures.
The open access paper can be reached through https://doi.org/10.3390/s23104600
This research has received funding from the Research Council of Lithuania (LMTLT), agreement No. S-MIP-22-76.