Excitation of Electrodynamic Anapole Mode in Nanosphere
Resonant optical excitation of dielectric particles offers unique opportunities for future optical and nanophotonic devices because of their reduced dissipative losses and large resonant enhancement the near-fields. In this regard, the discovery of electrodynamic ‘anapole mode’ as non-radiating source in high index dielectric materials provides a unique playground to realize new nanophotonic devices. Under specific conditions, the superposition of internal modes can generate non-radiating states, called ‘anapoles’, that are free from radiative loss. Even though, the study of non-radiating objects has been part of fundamental physics for a long time, the dynamic anapole mode in the optical frequencies has only been experimentally demonstrated in 2015 in disk shaped structures. In this talk, I will explore the possibility of excitation of dynamic anapole mode in spherical structures.
Coe, Brighton, "Excitation of Electrodynamic Anapole Mode in Nanosphere" (2018). University Research Symposium. 34.