Linear and nonlinear properties of ITO/SiO2 layered metamaterials

James A. Ethridge; John G. Jones; Manuel R. Ferdinandus; Michael J. Havrilla; Michael A. Marciniak

doi:10.1117/12.2594599

3 August 2021 Linear and nonlinear properties of ITO/SiO₂ layered metamaterials

James A. Ethridge, John G. Jones, Manuel R. Ferdinandus, Michael J. Havrilla, Michael A. Marciniak

Proceedings Volume 11796, Active Photonic Platforms XIII; 117960U (2021) https://doi.org/10.1117/12.2594599
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

The future of photonic devices involves harnessing non-linear effects, for applications such as frequency upconversion and down-conversion, optical switching, and emission control. To effectively do this, the optical properties of designed material systems are needed. Metamaterials can be fabricated in a layered form to operate in many wavelength bands, and they exhibit strong non-linear effects. To make the layered metamaterial, alternating layers of metal and dielectric were used. Samples were fabricated using physical vapor deposition for the material system ITO-SiO₂, with varying layer thicknesses for each sample. First, the linear properties of the samples were measured using variable angle spectral ellipsometry, and then the non-linear properties were measured using the Z-scan technique. The linear results show a good agreement with effective medium theory, which signifies that the metamaterials are suited for computer-aided design. Also, the non-linear results show strong non-linear properties, of n₂ = 1 ∗ 10¹⁴ cm²/W, and β = 2 ∗ 10¹⁰ cm/W, which is larger than many natural materials. This demonstrates the potential for use in non-linear applications.

Conference Presentation

Citation Download Citation

James A. Ethridge, John G. Jones, Manuel R. Ferdinandus, Michael J. Havrilla, and Michael A. Marciniak "Linear and nonlinear properties of ITO/SiO₂ layered metamaterials", Proc. SPIE 11796, Active Photonic Platforms XIII, 117960U (3 August 2021); https://doi.org/10.1117/12.2594599

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