Subwavelength diffraction management.
We study light propagation in nanoscale periodic structures composed of dielectric and metal in the visible range. We demonstrate that diffraction can be tailored both in magnitude and in sign by varying the geometric features of the waveguides. Diffraction management on a subwavelength scale is demonstrated by numerical solution of Maxwell equations in the frequency domain.
Conforti
Matteo
M
Dipartimento di Elettronica per l'Automazione, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Università di Brescia, Brescia, Italy. matteo.conforti@ing.unibs.it
Guasoni
Massimiliano
M
De Angelis
Costantino
C