Nonreciprocal optical reflection from a bidimensional array of subwavelength holes in a metallic film

Article

关键词: LIGHT TRANSMISSION;    GRATINGS;   

DOI  :  10.1103/PhysRevB.70.193409

来源: SCIE

【 摘 要 】

Using simulations and theoretical arguments we investigate the specular reflection of a perforated gold film deposited on a glass substrate. A square lattice of cylindrical holes is assumed to produce the periodic lateral corrugation needed to hybridize the surface plasmons with radiative states. It is shown that, contrasting transmission approaches, a knowledge of the reflection on either side of the film provides separate information on the gold-vacuum surface plasmons and on the gold-glass interface plasmons. Recent experimental data on a specific implementation of this system are reexamined; these show a good agreement between the measured reflections and the simulations in both directions of incident wave probes. This confirms the importance of taking into account the reflection asymmetry in the far-field assessment of surface plasmons properties.

【 授权许可】

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