Enhanced displacements in reflected beams at hyperbolic metamaterials. uri icon

abstract

  • 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.

published proceedings

  • Opt Express

author list (cited authors)

  • Xu, C., Xu, J., Song, G. e., Zhu, C., Yang, Y., & Agarwal, G. S.

citation count

  • 31

complete list of authors

  • Xu, Chenran||Xu, Jingping||Song, Ge||Zhu, Chengjie||Yang, Yaping||Agarwal, Girish S

publication date

  • September 2016