Annular aperture arrays: study in the visible region of the electromagnetic spectrum.
Fiche publication
Date publication
juillet 2005
Auteurs
Membres identifiés du Cancéropôle Est :
Dr MAILLOTTE Hervé
Tous les auteurs :
Salvi J, Roussey M, Baida FI, Bernal MP, Mussot A, Sylvestre T, Maillotte H, Van Labeke D, Perentes A, Utke I, Sandu C, Hoffmann P, Dwir B
Lien Pubmed
Résumé
Baida and Van Labeke recently proposed a structure that exhibits a supertransmission of light through an array of nanometric coaxial apertures in a metallic film that has been named an annular aperture array (AAA) [Opt. Commun. 209, 17 (2002); Phys. Rev. B 67, 155314 (2003); J. Microsc. 213, 140 (2003)]. We present the first experimental study, to our knowledge, of an AAA structure in the visible region. For technological reasons, the structure under study does not produce a supertransmission of 80% as in Baida and Van Labeke [Opt. Commun. 209, 17 (2002)]. We built the nanostructure and experimentally recorded its far-field spectral response. This transmission shows only one broad band with a maximum around lambda = 700 nm, giving a maximum efficiency around 17%. A finite-difference time-domain simulation reproduces quite well the obtained transmission spectrum.
Référence
Opt Lett. 2005 Jul 1;30(13):1611-3.