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Conferences > CLEO_SI > 2023 > STh1H > STh1H.6

2D Zero-Contrast Gratings for Unpolarized Transmission-Mode Mid-Infrared Bandpass Filtering

Benjamin J. Russell, Jiajun Meng, and Kenneth B. Crozier

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Abstract

We demonstrate polarization insensitive mid-infrared spectral bandpass filters in a single-layer silicon on sapphire process. Guided mode resonances, excited via 2D cuboid gratings, produce bandpass features with experimentally measured Q-factors >127, within broad extinction bands.

© 2023 The Author(s)

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