Homogenization of metasurfaces formed by random resonant particles in periodical lattices
Research output: Contribution to journal › Article › Scientific › peer-review
|Journal||Physical Review B|
|Publication status||Published - 16 May 2016|
|MoE publication type||A1 Journal article-refereed|
- Technical University of Denmark
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
In this paper we suggest a simple analytical method for description of electromagnetic properties of a geometrically regular two-dimensional subwavelength arrays (metasurfaces) formed by particles with randomly fluctuating polarizabilities. We propose an analytical homogenization method applicable for normal wave incidence on particle arrays with dominating electric dipole responses and validate it with numerical point-dipole modeling using the supercell approach. We demonstrate that fluctuations of particle polarizabilities lead to increased diffuse scattering despite the subwavelength lattice constant of the array.