Preparation and Optical Properties of Porous Anodic Alumina Films with Different Branched Structure
不同分枝结构多孔氧化铝膜的制备和光学特性

Using a two-step anodization process, the porous anodic alumina (PAA) templates are prepared. During the course of the second-step anodization,the anodization voltage is decreased as 1/nV0,where V0 is the initial voltage.Then PAA with n branches pores is obtained. UV-3101 spectral photometer is used to measure the transmitted spectrum and polarized spectrum of the PAA.The result shows that the PAA with linear pores (n=1) behaves better transmittance ratio and extinction ratio in the visible and near-infrared waveband than others (n>1).It found that the AAO with linear spectral photometer is a good reference as a kind of template material of wire grid polarizer.