Design of broadband anti-reflective metasurfaces based on an effective medium approach

N. S. Nye; A. Swisher; C. Bungay; S. Tuenge; T. Mayer; D. N. Christodoulides; C. Rivero-Baleine

doi:10.1117/12.2262026

11 May 2017 Design of broadband anti-reflective metasurfaces based on an effective medium approach

N. S. Nye, A. Swisher, C. Bungay, S. Tuenge, T. Mayer, D. N. Christodoulides, C. Rivero-Baleine

Author Affiliations +

Proceedings Volume 10181, Advanced Optics for Defense Applications: UV through LWIR II; 101810J (2017) https://doi.org/10.1117/12.2262026
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States

Abstract

In this paper we show how to systematically design anti-reflective metasurfaces for the mid-infrared wavelength range. To do so, we have utilized a multilayer arrangement involving a judiciously nano-perforated surface, having air holes, arranged in a hexagonal fashion. By exploiting an effective medium approach, we optimized the dimensions of the surface features in our design. Here, we report a broadband reflectivity 3.5 − 5.5 μm that is below 10% over a broad range of incident angles 0⁰ ≤ θ_𝑖 ≤ 70⁰ , irrespective of the incident polarization (TE, TM). Our experimental results are in excellent agreement with full-wave finite element simulations. This systematic approach can be used to design a wide variety of patterned metasurfaces, capable of controlling the phase of the incident optical field.

Citation Download Citation

N. S. Nye, A. Swisher, C. Bungay, S. Tuenge, T. Mayer, D. N. Christodoulides, and C. Rivero-Baleine "Design of broadband anti-reflective metasurfaces based on an effective medium approach", Proc. SPIE 10181, Advanced Optics for Defense Applications: UV through LWIR II, 101810J (11 May 2017); https://doi.org/10.1117/12.2262026

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