Angle resolved transmission through metal hole gratings

Mariani, F. ; León-Pérez, F. de ; Vendel, K. J. A. ; Martín-Moreno, L. (Universidad de Zaragoza) ; Exter, M. P. van

Resumen: We present the first angle resolved measurements of extraordinary optical transmission (EOT) through hole array gratings in a gold film. Varying the lattice spacing of the arrays and looking at higher diffraction orders, we retrieve the angular emission pattern of the constituent holes with better signal to noise ratio than with single-hole experiments. We present a method to determine separately the angular dependence of the direct and resonant contribution to EOT by using the spectral features of the diffraction orders together with an established model. The comparison of our results with the known angular transmission of a single hole in a metal film yields a good agreement for s-polarized light. Deviations are found for illumination with p-polarized light and we address the discrepancy with Coupled Mode Model calculations and Finite Difference Time Domain simulations. These measured deviations are currently not fully understood.

Idioma: Inglés

DOI: 10.1364/OE.25.009061

Año: 2017

Publicado en: Optics Express 25, 8 (2017), 9061-9070
ISSN: 1094-4087

Factor impacto JCR: 3.356 (2017)

Categ. JCR: OPTICS rank: 19 / 94 = 0.202 (2017) - Q1 - T1

Factor impacto SCIMAGO: 1.519 - Atomic and Molecular Physics, and Optics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-53432-C5-1-R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)