A slanted columnar TiO2 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 ...A slanted columnar TiO2 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 TiO2 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 TiO2 biaxial anisotropic thin film measured in the experiment almost overlap at the symmetrical oblique incidence at the ±θ 0 angles, which validates our theoretical derivation.展开更多
In this paper,2×2 characteristic matrices of uniaxially anisotropic thin film for extraordinary and ordinary wave are deduced at oblique incidence.Furthermore,the reflectance and transmittance of thin films are c...In this paper,2×2 characteristic matrices of uniaxially anisotropic thin film for extraordinary and ordinary wave are deduced at oblique incidence.Furthermore,the reflectance and transmittance of thin films are calculated separately for two polarizations,which provide a new concept for designing non-polarizing thin films at oblique incidence.Besides,using the multilayer birefringent thin films,non-polarizing designs,such as beam splitter thin film at single wavelength,edge filter and antireflection thin film over visible spectral region are obtained at oblique incidence.展开更多
基金supported by the National Natural Science Foundation of China under Grant No.61205211
文摘A slanted columnar TiO2 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 TiO2 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 TiO2 biaxial anisotropic thin film measured in the experiment almost overlap at the symmetrical oblique incidence at the ±θ 0 angles, which validates our theoretical derivation.
文摘In this paper,2×2 characteristic matrices of uniaxially anisotropic thin film for extraordinary and ordinary wave are deduced at oblique incidence.Furthermore,the reflectance and transmittance of thin films are calculated separately for two polarizations,which provide a new concept for designing non-polarizing thin films at oblique incidence.Besides,using the multilayer birefringent thin films,non-polarizing designs,such as beam splitter thin film at single wavelength,edge filter and antireflection thin film over visible spectral region are obtained at oblique incidence.
