Latest (collaboration) article published
Title : Single-scattering theory of light diffraction by a circular subwavelength aperture in a finitely conducting screen
Authors : Evgeny Popov, Michel Nevière, Anne Sentenac, Nicolas Bonod, Anne-Laure Fehrembach, Jérome Wenger, Pierre-François Lenne, and Hervé Rigneault
It has been released in the February edition of the journal of the optical society of JOSA A, vol. 24, pp. 339-358 (2007). Click here to read the abstract and download the paper (subscribers only).
This theoretical paper provides analytical formulas for the electromagnetic field diffracted by a subwavelength aperture in an opaque screen (metallic or dielectric). My contribution to these findings is very small, my name was put on the paper mostly because of the ongoing collaboration between the theoretical and experimental groups at the Fresnel Institute.In my opinion, the main application concerns the far-field directivity from a nanoaperture (part 6, figures 8 to 11). The theory predicts a directivity of the radiation pattern that increases for small permittivities. Surprisingly, this holds for metals AND dielectrics, thus independently of surface plasmon excitation.