Research

Directional Control of Light

Creating a nanoscale-material that can achieve light selection based purely on the angle of propagation is a long-standing scientific challenge. We tailored the overlap of the band gaps of multiple one-dimensional photonics crystals, each with a different periodicity, in such a way as to preserve the characteristic Brewster modes across a broadband spectrum. Our method enables transparency throughout the visible spectrum at one angle—the generalized Brewster angle—and reflection at every other viewing angle.

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Yichen Shen