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Two-dimensional diffraction grating was fabricated on aluminum plate on the basis
of anodization technique. The reflective grating with interpore ranging 500 nm was prepared
using mild anodization. In order to make the porous alumina arrays a single step mild
anodization in 0.4 M phosphoric acid with 195 anodization voltage was employed. Interpore
distances were seen 500 nm when the mild anodization technique was used. The domain size
of hexagonal ordered arrays was observed with over 25 µ2 area. Optical properties of gratings
were investigated using visible light sources thereby the structural details of gratings were
determined.
Keywords: porous aluminum oxide; mild anodization; reflective diffraction grating |
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