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arXiv · 2004.03361

Continuously tuning the refractive indices by restructuring materials on the 20-1000 atoms scale: improving anti-reflection coating designs

Jacob Poole·Aidong Yan·Paul Ohodnicki·Kevin Chen
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Abstract

We demonstrate the capability of block-copolymer templating to tune the refractive indices of functional oxides over a broad range by structuring materials on the 20-1000 atoms scale, with simple one-pot synthesis. The presented method is then combined with genetic algorithm-based optimization to explore its application for anti-reflection coating design. Merging these techniques allows for the realization of a minimal two-layer anti-reflection stack for silicon with broadband reflectivity of just 3% from the nominal value of 38%, over a 120{\deg} angular span, validated by fabrication followed by optical measurements.

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Jacob Poole, Aidong Yan, Paul Ohodnicki, Kevin Chen. 2020-04-04. Continuously tuning the refractive indices by restructuring materials on the 20-1000 atoms scale: improving anti-reflection coating designs. https://arxiv.org/abs/2004.03361

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