Subwavelength Diffraction Management

TL;DR

This paper explores how to control light diffraction at the nanoscale in periodic dielectric-metal structures by adjusting geometric features, enabling precise diffraction management in the visible spectrum.

Contribution

It introduces a method for subwavelength diffraction control in nanoscale structures through geometric tuning, demonstrated via numerical solutions of Maxwell's equations.

Findings

Diffraction can be tailored in magnitude and sign.

Subwavelength diffraction management is achievable.

Numerical simulations validate the approach.

Abstract

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 frequency domain.