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Multi-layered graphene silica-metasurface based infrared polarizer structure

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Abstract

This article proposes multi-layered graphene, silica, and cross patterned gold stack structure-based polarizers. This structure is numerically investigated over the frequency range of 1–15 THz. The behaviour of the polarizer structure is numerically investigated in terms of various structural parameters such as phase variation, reflectance, transmittance, and Polarization conversion rate. The different input incident conditions (X polarization and Y Polarization) are also investigated for the proposed frequency spectrum range. The maximum reflectance amplitude was observed up to 80%. Different physical properties of single- and multi-layered graphene silica structures were significantly other. The numerical results report the polarization phase difference of − 15 to 25° for double-layer graphene structure and − 100 to 25° for single-layered graphene structure. The effect of the wide-angle input incident condition is also investigated for the proposed polarizer structure to identify the wide-angle operating stability. It is reported 80% of the reflectance amplitude stability for 0–60° of the oblique incident angle. It is also observed the near to similar reflectance values for the different silica substrate heights varying from 500 to 2500 nm. Investigated results of the single-layered and multi-layered graphene structure can be used for the various photonics and optoelectronics applications such as a polarizer, absorber, sensor, etc.

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Correspondence to Shobhit K. Patel.

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Sorathiya, V., Patel, S.K., Ahmed, K. et al. Multi-layered graphene silica-metasurface based infrared polarizer structure. Opt Quant Electron 54, 254 (2022). https://doi.org/10.1007/s11082-022-03551-9

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  • DOI: https://doi.org/10.1007/s11082-022-03551-9

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