Enhanced displacements in reflected beams at hyperbolic metamaterials.
- Additional Document Info
- View All
We examine the Goos-Hnchen (G-H) shift of a Gaussian beam reflected on a thin slab of Ag/TiO2 hyperbolic multilayer metamaterial (HMM). The HMM is modeled using the effective medium theory which yields the anisotropic dielectric functions of the HMM. The G-H shifts can be very large on the surface of the HMM. It can be about 40 m which are far bigger than the G-H shifts on the usual materials like metals and dielectrics. The enhancement is due to the excitation of the Brewster modes in HMM. Such Brewster modes in HMM have a well-defined frequency-dependent line shape. We relate the the half width at half maximum of the G-H shift to the imaginary part of the complex frequency of the Brewster mode. Moreover, we also present results for the Imbert-Fedorov shifts as well as the spin Hall effect of light on the surface of a thin HMM slab. We show that the spin Hall effect on the HMM slab is much more pronounced than that on the surface of metal. Thus a thin HMM slab can be used to enhance the lateral displacements, which can have many interesting applications for optical devices.
author list (cited authors)
Xu, C., Xu, J., Song, G. e., Zhu, C., Yang, Y., & Agarwal, G. S.
complete list of authors
Xu, Chenran||Xu, Jingping||Song, Ge||Zhu, Chengjie||Yang, Yaping||Agarwal, Girish S