title: Radiation-suppressed plasmonic open resonators designed by nonmagnetic transformation optics.
abstract: How to confine light energy associated with surface plasmon polaritons (SPPs) in a physical space with minimal radiation loss whereas creating maximum interacting section with surrounding environment is of particular interest in plasmonic optics. By virtue of transformation optics, we propose a design method of forming a polygonal surface-plasmonic resonator in fully open structures by applying the nonmagnetic affine transformation optics strategy. The radiation loss can be suppressed because SPPs that propagate in the designed open structures will be deceived as if they were propagating on a flat metal/dielectric interface without radiation. Because of the nonmagnetic nature of the transformation strategy, this design can be implemented with dielectric materials available in nature. An experimentally verifiable model is subsequently proposed for future experimental demonstration. Our design may find potential applications in omnidirectional sensing, light harvesting, energy storage and plasmonic lasing.
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.
authors.forename: Hongyi
authors.initials: H
authors.lastname: Xu
authors.forename: Xingjue
authors.initials: X
authors.lastname: Wang
authors.forename: Tianyuan
authors.initials: T
authors.lastname: Yu
authors.forename: Handong
authors.initials: H
authors.lastname: Sun
authors.forename: Baile
authors.initials: B
authors.lastname: Zhang
mesh_terms: D000465:Algorithms; D016880:Anisotropy; D004563:Electrochemistry; D060733:Electromagnetic Radiation; D004867:Equipment Design; D008027:Light; D008670:Metals / Q000737:chemistry*; D008962:Models, Theoretical; D055096:Optical Devices; D055095:Optics and Photonics / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D008670:Metals