BROADBAND LIGHT BENDING WITH PLASMONIC NANOANTENNAS PDF

August 3, 2019 posted by

Request PDF on ResearchGate | Broadband Light Bending with Plasmonic Nanoantennas | The precise manipulation of a propagating wave using phase. Broadband light bending with plasmonic nanoantennas. Xingjie Ni, Naresh K. Emani, Alexander V. Kildishev, Alexandra Boltasseva, Vladimir. Generalized Snell’s Law and bending near-IR light with optical nanoantennae .. Broadband light bending with plasmonic nanoantennas.

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In our work we have proposed and experimentally demonstrated an efficient bilayer plasmonic metasurface that works in transmission mode at visible frequencies see Figure 1. He, High-efficiency broadband anomalous reflection by gradient meta-surfaces, Nano Lett. In addition, there has been particular interest in ultrathin metasurfaces operating in transmission mode, but these metasurfaces are still in their infancy because of their low manipulation efficiency and extremely complex fabrication methods especially for visible light manipulation.

Broadband light bending with plasmonic nanoantennas.

We review the exciting field of optical metamaterials and outline the recent progress in developing tunable and active MMs, semiconductor-based and loss-free negative-index MMs. It should be possible to extend our mechanism to other frequencies by using different materials and structure parameters. In addition to providing all the benefits of plasmonic metasurfaces in terms of light manipulation with our hybrid bilayer metasurface, we also overthrow the theoretical efficiency upper limit of ultrathin plasmonic metasurfaces.

Click here to learn more. Hess, Two two-dimensional materials are better than one, Sciencep. Such complicated designs result in great challenges for their application at visible wavelengths. Login or Create Account. There has been a growing amount of attention to 2D metasurfaces since their introduction for manipulating the propagation of electromagnetic waves. Privacy Terms of Use. Shalaev, Broadband light bending with plasmonic nanoantennas, Sciencep.

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Equations displayed with MathJax. In contrast, our compact design gives rise to strong intra-plane coupling among the unit cells and to strong inter-plane coupling between the layers. Nominal space between top and bottom layers. We’ve also updated our Privacy Notice. The entire structure is ultrathin, with a thickness of nm about a sixth of the wavelength. High conversion efficiency performance of the optimized bilayer plasmonic metasurface.

It consists of a top layer of gold nanoantennas and a bottom layer of its Babinet-inverted pattern. Moreover, we have achieved a strikingly high extinction ratio of Improved approaches to fill the wide gap between laboratory and practical applications are therefore still required and are being strongly pursued.

Grbic, Efficient light bending with isotropic metamaterial Huygens’ surfaces, Nano Lett. Integrated Photonics Research, Silicon and Nanophotonics Although metasurfaces that operate in reflection mode exhibit relatively higher efficiencies than those in transmission mode, 4, 5 the reflective metasurfaces also introduce inconveniences in many applications.

We exploit both this intra-layer and inter-layer coupling to enhance the overall manipulation efficiency. This website uses cookies to deliver some of our products and services as well as for analytics and to provide you a more personalized experience.

In general, all these promising metasurfaces can be wwith as operating either in reflection mode or transmission mode. This website uses cookies to deliver some of our products and services as well as for analytics and to provide you ligth more personalized experience.

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Abstract We review the exciting field of optical metamaterials and outline the recent progress in developing tunable and active MMs, semiconductor-based and loss-free negative-index MMs. Click here to learn more.

Shalaev, Ultra-thin, planar, Babinet-inverted plasmonic metalenses, Light: We marry these two metasurfaces together to form a bilayer metasurface. We are now planning to use our bilayer configuration to design and demonstrate various metasurface devices e. By continuing to use this site, you agree to our use of cookies.

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Broadband light bending with plasmonic nanoantennas — Penn State

If you require urgent assistance, please contact Customer Service. A key feature of our bilayer metasurface design is its ease of fabrication see Figure 3.

Our hybrid metasurface potentially exceeds the performance of all previously demonstrated metasurfaces that operate in transmission mode at visible wavelengths both dielectric and plasmonic. Schematic representation of benidng fabrication procedure for the bilayer plasmonic metasurface. To design the geometry for a given wavelength, we therefore tailor the parameters of all subunit cells as a whole by considering the coupling of all neighboring elements.

In this way we manage to avoid the lift-off process. Our one-step fabrication for the bilayer metasurface is more viable and cost-effective, and therefore largely beneficial for practical applications.

Meanwhile, it has also been reported that high efficiency is possible for transmission mode metasurfaces in the microwave or IR regions. Height of the HSQ pillars. Right click equation to reveal menu options. We have thus shown that the common perception of the superiority of silicon metasurfaces is uncertain. Equations displayed with MathJax. Password Forgot your password? We review the exciting field of optical metamaterials and outline the recent progress in developing tunable and active MMs, semiconductor-based and loss-free negative-index Plas,onic.

Click here to see what’s new. We obtain a high conversion efficiency Please login to set citation alerts. We’ve also updated our Privacy Notice.