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Published January 7, 2019 | Submitted
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Stacked Wafer Gradient Index Silicon Optics with Integral Anti-reflection Layers

Abstract

Silicon optics with wide bandwidth anti-reflection (AR) coatings, made of multi-layer textured silicon surfaces, are developed for millimeter and submillimeter wavelengths. Single and double layer AR coatings were designed for an optimal transmission centered on 250 GHz, and fabricated using the DRIE (Deep Reaction Ion Etching) technique. Tests of high resistivity silicon wafers with single-layer coatings between 75 GHz and 330 GHz are presented and compared with the simulations.

Additional Information

This work was funded by NASA (Grant NNX15AE01G).

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Created:
August 19, 2023
Modified:
February 24, 2024