title: Controlling magnetic dipole transition with magnetic plasmonic structures.
abstract: A plasmonic structure with double gold patches is proposed for enhancing the spontaneous emission of a magnetic dipole transition through a magnetic hot area. A Purcell factor of nearly 2000 can be obtained at optical frequencies together with a low sensitivity in spatial and spectral mismatches between the light emitter and the resonance mode. The associated resonance can be tuned from the visible to the IR frequencies, enabling efficient control of forbidden transitions using plasmonic structures.
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China.
authors.forename: Tianhua
authors.initials: T
authors.lastname: Feng
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhou
authors.forename: Dahe
authors.initials: D
authors.lastname: Liu
authors.forename: Jensen
authors.initials: J
authors.lastname: Li