Tootfinder

Spatial mapping and tuning of terahertz modes in a silicon whispering gallery mode resonator
Anna R. Petersen, Pablo Paulsen, Florian Sedlmeir, Nicholas J. Lambert, Harald G. L. Schwefel, Mallika Irene Suresh
https://arxiv.org/abs/2506.17257

Spatial mapping and tuning of terahertz modes in a silicon whispering gallery mode resonator
Identification and subsequent manipulation of resonant modes typically relies on comparison with calculations which require precise knowledge of material parameters and dimensions. For millimetre-sized resonators that support millimetre-wave modes, this is particularly challenging due to the poorly determined physical parameters and additional perturbative effects of nearby dielectric or metallic substrates in experimental setups. Here, we use perturbation from a metal needle to experimentally …