Abstract
A slanted columnar TiO<sub>2</sub> sculptured anisotropic thin film is prepared using the glancing
angle deposition (GLAD) technique. We extend the inference regarding the optical properties of a uniaxial
birefringent film based on theoretical analysis to include the more general case of a multilayer biaxial
birefringent thin film, the optic axis of which is in the incident plane. We also investigate in detail the
symmetrical angularselective transmittance performances of TiO<sub>2</sub> biaxial anisotropic thin films for
light incident at the same angle but coming from opposite sides of the surface normal. The tilted nanocolumn
microstructures of the birefringent thin films induce optical anisotropy. The transmisson spectra for the
p-polarized wave of TiO<sub>2</sub> biaxial anisotropic thin film measured in the experiment almost overlap at
the symmetrical oblique incidence at the ±θ<sub>0</sub> angles, which validates our theoretical
derivation.
© 2013 Chinese Optics Letters
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