Aluminum-based hybrid gratings for spectral synthesis in the infrared

Romil Audhkhasi; Michelle L. Povinelli

doi:10.1117/12.2568344

19 August 2020 Aluminum-based hybrid gratings for spectral synthesis in the infrared

Proceedings Volume 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII; 114622G (2020) https://doi.org/10.1117/12.2568344
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Conference Poster

Abstract

We propose a strategy for designing infrared absorbers with predefined spectral response using aluminum gratings as building blocks. We begin by defining 3 target spectra with resonances in the 7 – 15 micron wavelength range. Using FDTD simulations and interpolation, we create a reference library of aluminum gratings to investigate the relationship between their structural parameters and spectral properties. Next, we develop a search algorithm to find gratings from this library corresponding to resonances in the target spectra. Finally, we present an approach for designing hybrid structures from these gratings to generate each of the 3 target spectra.

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Romil Audhkhasi and Michelle L. Povinelli "Aluminum-based hybrid gratings for spectral synthesis in the infrared", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 114622G (19 August 2020); https://doi.org/10.1117/12.2568344

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