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We design and fabricate a light absorber based on one-dimensional gratings in amorphous Si. We obtain high theoretical and experimental absorption in unpolarized light over wide wavelength and angular ranges.
We present experimental evidence of the rapid exchange of diffracted power between the reflected zero-order wave and a substrate wave across a small angular range. This effect enables resonant devices we call Rayleigh reflectors.
Design, fabrication, and characterization of guided-mode resonance polarizers with single dielectric layer are presented. These Si3N4 and TiO2 polarizers show high transmittance for TM and low transmittance for TE polarization at λc = 1550 nm.
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