Various optical elements with subwavelength structured surfaces have been developed. The
periods of the subwavelength structures are too short to generate diffracted light waves. But …

One of the important properties of an optical wavefront is the transverse field distribution of
the beam, that is, the distribution of its amplitude and phase as well as its polarization state …

Several design-concepts are presented for so-called efficiency achromatized diffractive
optical elements (EA-DOEs) possessing diffraction efficiency larger than 97% over a broad …

The objective of the study is to optimize the optical fiber structure for mode-division
multiplexing systems using nanostructurization. The nanostructuring technique allows to …

Optical properties of two-dimensional (2D) high-contrast gratings are investigated. We
analyze the mechanisms for high-contrast gratings to function as various high-performance …

We developed a new kind of compact flat-surface nanostructured gradient index vortex
phase mask, for the effective generation of optical vortex beams in broadband infrared …

We present an extension of the rigorous coupled-wave analysis technique to analyze
second-harmonic generation (SHG) in periodic optical nanostructures in the undepleted …

A field summation method is used to determine the effective ε and μ of metamaterial
structures. The numerical implementation of this method using commercial software is …

A light field display for providing continuous 3D images to viewers at multiple views is
provided. The light field display includes a pixel layer having a plurality of pixel layer …

The ability of subwavelength structures to create an artificial effective index opens up new
perspectives in designing highly efficient diffractive optical elements. We demonstrate a …