Work

Negative Role of Surface Plasmons in the Transmission of Metallic Gratings with Very Narrow Slits

Year: 2002

Type: article

Abstract: It is generally admitted that the extraordinary transmission of metallic grating with very narrow slits is mainly due to the excitation of surface plasmons on the upper and lower interfaces of the grating. We show that the surface plasmon contribution is not the prime effect and that waveguide mode resonance and diffraction are responsible for the extraordinary transmission. Additionally and surprisingly, we reveal that the transmittance of subwavelength metallic gratings is always nearly zero for frequencies corresponding to surface plasmon excitation. This finding implies that surface plasmons play a negative role in the transmission.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.88.057403

Authors: Qing Cao, Philippe Lalanne

Institutions: Centre National de la Recherche Scientifique, Laboratoire Charles Fabry

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2053994007

FWCI: 14.4

Cites: 18

Cited by: 574

Related to: 10