title: Effect of varying pore size of AAO films on refractive index and birefringence measured by prism coupling technique.
abstract: Anodic aluminum oxide (AAO) films with different pore sizes were prepared to modulate the effective refractive index and birefringence. To investigate the relationship between the refractive index and the pore size of the AAO film, optical constants were obtained using a prism coupler with various lasers. With experimental results, the dispersion curve of alumina itself without pores was extracted using a theoretical anisotropic model. We demonstrated that AAO films could offer a wide range of refractive index and birefringence values for optical device applications. Furthermore, index profiles as a function of the thickness of the AAO films were obtained by inverse Wentzel-Kramer-Brillouin approximation to examine the optical homogeneity.
authors: Department of Physics and Graduate School of Nanoscience & Technology (WCU), Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.
authors: Su-Hyun
authors: SH
authors: Gong
authors: Arnaud
authors: A
authors: Stolz
authors: Gi-Hwan
authors: GH
authors: Myeong
authors: Elhadj
authors: E
authors: Dogheche
authors: Anisha
authors: A
authors: Gokarna
authors: Sang-Wan
authors: SW
authors: Ryu
authors: Didier
authors: D
authors: Decoster
authors: Yong-Hoon
authors: YH
authors: Cho