Transformation optics approach for Goos-Hänchen shift enhancement at metamaterial interfaces

Onderzoeksoutput: Conference paper

2 Citaten (Scopus)

Samenvatting

Since its first observation in 1947, the Goos-Hänchen effect—an electromagnetic wave phenomenon where a totally reflected beam with finite cross section undergoes a lateral displacement from its position predicted by geometric optics—has been extensively investigated for various types of optical media such as dielectrics, metals and photonic crystals. Given their huge potential for guiding and sensing applications, the search for giant and tunable Goos-Hänchen shifts is still an open question in the field of optics and photonics. Metamaterials allow for unprecedented control over electromagnetic properties and thus provide an interesting platform in this quest for Goos-Hänchen shift enhancement. Over the last few years, the Goos-Hänchen effect has been investigated for specific metamaterial interfaces including graphene-on-dielectric surfaces, negative index materials and epsilon- near-zero materials. In this contribution, we generalize the approach for the investigation of the Goos-Hänchen effect based on the geometric formalism of transformation optics. Although this metamaterial design methodology is generally applied to manipulate the propagation of light through continuous media, we show how it can also be used to describe the reflections arising at the interface between a vacuum region and a transformed region with a metamaterial implementation. Furthermore, we establish an analytical model that relates the magnitude of the Goos-Hänchen shift to the underlying geometry of the transformed medium. This model shows how the dependence of the Goos-Hänchen shift on geometric parameters can be used to dramatically enhance the size of the shift by an appropriate choice of permittivity and permeability tensors. Numerical simulations of a beam with spatial Gaussian profile incident upon metamaterial interfaces verify the model and firmly establish a novel route towards Goos-Hänchen shift engineering using transformation optics. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Originele taal-2English
TitelProc. SPIE
Plaats van productieBrussels, Belgium
UitgeverijSPIE
Aantal pagina's7
Volume9883
ISBN van geprinte versie0277-786X
DOI's
StatusPublished - 18 apr 2016
EvenementSPIE Photonics Europe 2016: Optics, Photonics and Digital Technologies for Imaging Applications IV - Square, Brussels, Belgium
Duur: 3 apr 20167 apr 2016
Congresnummer: 9896
http://spie.org/conferences-and-exhibitions/photonics-europe

Conference

ConferenceSPIE Photonics Europe 2016
Land/RegioBelgium
StadBrussels
Periode3/04/167/04/16
Internet adres

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