A X-band ESR apparatus using a Whispering Gallery Mode dielectric resonator

ESR and ENDOR experiments using a disc-shaped resonator working in the Whispering Gallery Mode (WGM)

“…An important improvement with respect to a previous scheme [2] has been found in replacing the quartz rod (12 mm in diameter) with an alumina rod having a smaller diameter (8 mm), as it is shown in Fig. 1.…”

“…The travelling-wave nature of the microwave field propagating all around the disc-shaped WGM dielectric resonator (DR) has already put into evidence [2]. Recalling the definition of the "caustic" as the fictitious surface internal to the disc resonator that bounds the microwave field reflected by the concave boundary of the dielectric material-alr interface, some remarks can be made.…”

“…One of the possible ways of exciting the travelling wave inside the DR consists in exploiting the evanescent field generated by a microwave field running along a dielectric rod [2,4]. When the disc-shaped resonator finds its resonance condition Eq.…”

Simultaneous Micromechanical and Electromagnetic Detection of Electron Paramagnetic Resonance

“…Whispering gallery dielectric resonators have been used in the past few years for EPR applications (12)(13)(14). These resonators have several appealing characteristics that can be summarized here.…”

High-Field, Multifrequency EPR Spectroscopy Using Whispering Gallery Dielectric Resonators

“…A series of works (22)(23)(24) showed the capabilities of this type of resonators in EPR experiments carried out at different frequencies up to 75 GHz.…”