Polarization selective metasurface formed by interference laser writing

Ya M Andreeva,M M Sergeev,T Itina,V V Koval

doi:10.1088/1742-6596/1461/1/012004

Abstract

Polarization dependent optical response of the periodically nanostructured SiO2-Ag nanocomposite material is investigated. As a result of the laser-based surface structuring, the reflection is found to be particularly enhanced and blueshifted for parallel polarisation. This result is attributed to the interaction between photonic and plasmonc resonances, namely to the coupling of the grating caused Rayleigh-Wood anomaly mode (described by using grating theory) with localized surface plasmon modes of the embedded Ag nanoparticles (described by using effective medium approach). The laser-induced formation of such metasurface allows precise control of the effect that is essential for practical application in photonics devices and optical filters.

Highlights

Structures with a combination of plasmonic properties if NPs and photonic properties of the matrix nanorelief are of great practical interest in designing metasurfaces for photonics, for various sensors, for optics and for security [1]
A number of papers appeared related to the photo-controlled spontaneous organization of metallic NPs in porous films, as well as in glasses, where nanostructures were formed under the influence of CW laser radiation and femtosecond laser pulses [8, 9]
We demonstrate the effect of polarization selection with a nanocomposite metasurface obtained by laser treatment

Summary

Introduction

Structures with a combination of plasmonic properties if NPs and photonic properties of the matrix nanorelief are of great practical interest in designing metasurfaces for photonics, for various sensors, for optics and for security [1]. Methods of laser recording of structures [5], growing nanoobjects of complex shape [6] and synthesis of nanoparticles [7] are effectively used to control the properties of functional elements. Fabrication of such materials is possible by different methods, among which electron beam lithography and laser formation are recommended to be the most effective. To create functional surface with new optical properties, it is promising to use laser for writing a periodic nanorelief on a mesoporous film along with the synthesis of NPs and their spatial self-organization .

Results

Conclusion