Experimental demonstration of birefrigent transformation optics devices

Smolyaninova, Vera N.; Ermer, H. Kurt; Piazza, Alex; Schaefer, David; Smolyaninov, Igor I.

doi:10.1103/physrevb.87.075406

Cited by 8 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the ability to tailor the inhomogeneous indices of refraction on two optical axes independently, the proposed method provides a way to realize other kinds of bifunctional metasurface devices. We remark that the proposed planar bifunctional device and design method are totally different from the earlier optical “Janus” device based on quasiconformal mapping and other transformation‐optics devices with different functionalities for different polarized waves .…”

Section: Discussionmentioning

confidence: 76%

Planar bifunctional Luneburg-fisheye lens made of an anisotropic metasurface

Wan

Shen

Luo³

et al. 2014

Laser & Photonics Reviews

111

View full text Add to dashboard Cite

Luneburg lens and Maxwell-fisheye lens are wellknown microwave and optical devices with distinct focusing properties. Here, a planar bifunctional Luneburg-fisheye lens made of an anisotropic metasurface is presented, which features as a Luneburg along the horizontal optical axis, while as a fisheye along the vertical optical axis. A method to control the inhomogeneous indices of refraction along the two optical axes independently is proposed by designing an anisotropic and nonuniform metasurface, which can provide the required distributions of refractive indices approximately for Luneburg and fisheye lenses viewing from the two optical axes. Experiments in the microwave frequency range demonstrate very good performance of the planar bifunctional Luneburg-fisheye lens. The proposed method opens up an avenue to design other kinds of bifunctional devices using metasurfaces in the microwave, terahertz, and even optical ranges.

show abstract

Section: Discussionmentioning

confidence: 76%

Planar bifunctional Luneburg-fisheye lens made of an anisotropic metasurface

Wan

Shen

Luo³

et al. 2014

Laser & Photonics Reviews

111

View full text Add to dashboard Cite

show abstract

“…A successful attempt to combine two optical functions into a single device with uniaxial symmetry was previously shown in2 and such a device was realized experimentally in10. The work of2 was also general: it combined arbitrary lens functions in overlapping physical space (where light entering an arbitrary point of a lens may interact with the entire body of the lens, for all points on the lens) and it is this generality that made the finding significant.…”

mentioning

confidence: 98%

Exploiting design freedom in biaxial dielectrics to enable spatially overlapping optical instruments

Akbarzadeh

Qiu

Danner

2013

Sci Rep

View full text Add to dashboard Cite

The optical behavior of gradient biaxial dielectrics has not been widely explored in the literature due to their complicated nature, but the extra degrees of freedom in the index tensor have the potential of yielding useful optical instruments which are otherwise unachievable. In this work, a design method is described in detail which allows one to combine the behavior of up to four totally independent isotropic optical instruments in an overlapping region of space. This is non-trivial because of the mixing of the index tensor elements in the Hamiltonians; previously known methods only handled uniaxial dielectrics (where only two independent isotropic optical functions could overlap). The biaxial method introduced also allows three-dimensional multi-faced Janus devices to be designed; these are worked out in an example of what is possible to design with the method.

show abstract

“…The NRM structures are of importance for transformation optics, 30 the most well-known example being the invisibility cloaks. For instance, optical carpet cloaks 31 were reported with effective index gradient obtained by drilling hole arrays with varying geometry.…”

Section: Problem Formulationmentioning

confidence: 99%

Exact analytical solution for fields in gradient index metamaterials with different loss factors in negative and positive refractive index segments

et al. 2013

View full text Add to dashboard Cite

Abstract. Gradient refractive index metamaterials are of interest for various applications of transformation optics. Wave propagation through gradient index metamaterials using an exact analytical approach is investigated. Composite materials containing constituents with negative real and positive real indexes of refraction are considered. An exact analytical solution for the field distribution is obtained for the sinusoidal spatial variation of complex effective permittivity and permeability along a fixed direction, under the assumption that the wave impedance remains spatially uniform across the structure. Loss factors in the constituent materials can be different from each other corresponding to the realistic situations. Temporal dispersion can be arbitrary subject to the physical limitations imposed by the Kramers-Kronig relations. A numerical model based on the Z-transform is developed to verify the analytical results. The approach can be applied to arbitrary periodic refractive index profiles using the Fourier series method.

show abstract

Experimental demonstration of birefrigent transformation optics devices

Cited by 8 publications

References 13 publications

Planar bifunctional Luneburg-fisheye lens made of an anisotropic metasurface

Planar bifunctional Luneburg-fisheye lens made of an anisotropic metasurface

Exploiting design freedom in biaxial dielectrics to enable spatially overlapping optical instruments

Exact analytical solution for fields in gradient index metamaterials with different loss factors in negative and positive refractive index segments

Contact Info

Product

Resources

About