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Design of angularly tolerant zero-contrast grating filters for pixelated filtering in the mid-IR range

Léopold Macé 1 Olivier Gauthier-Lafaye 1 Antoine Monmayrant 1 Henri Camon 1
1 LAAS-PHOTO - Équipe Photonique
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : Zero-contrast gratings (ZCG) can be used to implement narrow bandpass transmission filters. However, they suffer from a poor angular tolerance which hinders their use in pixelated applications. Combining ZCG with double-corrugation grating, we increase the resonance width and the angular tolerance of the filter by more than one order of magnitude. Filters tunable around 4.6μm with more than 90% transmission and compatible with 140μm pixel size are demonstrated.
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https://hal.laas.fr/hal-01934949
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Submitted on : Monday, November 26, 2018 - 1:39:24 PM
Last modification on : Friday, January 10, 2020 - 9:10:14 PM

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Léopold Macé, Olivier Gauthier-Lafaye, Antoine Monmayrant, Henri Camon. Design of angularly tolerant zero-contrast grating filters for pixelated filtering in the mid-IR range. Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2017, 34 (4), pp.657-665. ⟨10.1364/JOSAA.34.000657⟩. ⟨hal-01934949⟩

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