title: Experimental characterization of optical nonlocality in metal-dielectric multilayer metamaterials.
abstract: The optical nonlocality in metal-dielectric multilayer metamaterials is characterized experimentally as a function of the angle of incidence with respect to the TE-polarized incident light. The physical mechanism of the difference between the nonlocal effective permittivity and the effective-medium-theory-based effective permittivity depending on the incident angle is theoretically revealed through the analysis of the band structure, the dispersion relation, and the iso-frequency contours according to the transfer-matrix method. Such effective permittivity difference is also retrieved in the metal-dielectric multilayers based on the measured transmission and reflection spectra.
authors.forename: Lei
authors.initials: L
authors.lastname: Sun
authors.forename: Fei
authors.initials: F
authors.lastname: Cheng
authors.forename: Cherian J
authors.initials: CJ
authors.lastname: Mathai
authors.forename: Shubhra
authors.initials: S
authors.lastname: Gangopadhyay
authors.forename: Jie
authors.initials: J
authors.lastname: Gao
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Yang
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D008027:Light; D008670:Metals / Q000737:chemistry*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D008670:Metals