title: Optical magnetic field enhancement through coupling magnetic plasmons to Tamm plasmons.
abstract: We report on a theoretical investigation of the coupling between magnetic plasmons (MPs) and Tamm plasmons (TPs) in a metal-dielectric Bragg reflector (DBR) containing a gold nanowire pair array embedded in the low refractive index layer closest to the metal film. Strong coupling between MPs and TPs is observed, manifested by large anticrossings in the dispersion diagram. It creates a narrow-band hybridized MP mode with a Rabi-type splitting as large as 290 meV. Upon the excitation of this hybridized MP mode, a 2.5-fold enhancement of the magnetic field in the center of nanowire pairs is achieved as compared with the pure MP of the nanowire pairs embedded in a bare DBR structure (without the metal film). This result holds a promising potential application in magnetic nonlinearity and sensors.
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Hai
authors.initials: H
authors.lastname: Liu
authors.forename: Xiudong
authors.initials: X
authors.lastname: Sun
authors.forename: Fengfeng
authors.initials: F
authors.lastname: Yao
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Pei
authors.forename: Feng
authors.initials: F
authors.lastname: Huang
authors.forename: Haiming
authors.initials: H
authors.lastname: Yuan
authors.forename: Yongyuan
authors.initials: Y
authors.lastname: Jiang
mesh_terms: D003198:Computer Simulation; D008027:Light; D060526:Magnetic Fields; D008962:Models, Theoretical; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*