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A methodology to characterize the complex dielectric permittivity of low-loss materials at millimeter and submillimeter wavelengths, based on whispering gallery mode dielectric resonators, is presented, together with some illustrative results.
This paper discusses two versions of resonator that appear well suited for millimetre wave applications. The first proposed solution is given by the whispering gallery mode (WGM) dielectric resonator. The second proposed solution is a variant of the so called nonradiative configuration (nonradiative metallic resonator). The key element of both the proposed solutions is given by their open configuration,...
High-field/high frequency EPR spectroscopy measurements are shown. Experiments were carried out at 240- and 316-GHz frequencies. The employed apparatus uses a novel combination of far infrared molecular lasers and of probehead exploiting dielectric resonators working in the whispering gallery modes. This approach constitutes a relatively simple method of multifrequency EPR spectroscopy and opens appealing...
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