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Polarizing grid schematic. Wires are in region II, with pitch , fractional coverage , and height . Supporting substrate is region III; air or vacuum is region I.
Polarization efficiency as function of wavelength for aluminum (full line, in the infinite wavelength limit; symbols, numerical calculation) and silicon grids (dashed line, in the infinite wavelength limit) with volume fraction and thickness .
Plan-view SEM micrograph of the Al wire grid supported on a fused quartz wafer. The scale bar is long.
Spectral polarization efficiency for the nanowire grid of Fig. 3 (solid line). The squares represent the exact numerical calculation for wires thick, with a period and , made of a mixture of Al and (6:1).
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