Goos–Hänchen shifts of the reflected waves from the inhomogeneous slab with a positive and negative index transition layer

✍ Scribed by Hongmin Mao; Taocheng Zang; Jian Sun; Tao Pan; Guoding Xu

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 320 KB
• Volume: 249
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.201147413

✦ Synopsis

Abstract

Goos–Hänchen (GH) shifts of the reflected waves through a transition layer where both the dielectric permittivity ε and magnetic permeability µ change linearly from positive to negative values are investigated. Based on invariant imbedding approach and the stationary‐phase method, the differential equations for the reflection and transmission coefficients are obtained. We demonstrate numerically the dependence of the shifts on the angle of incidence and the inhomogeneous slab's thickness. The results show that the GH shifts are sensitive to the angle of incidence in a specific thickness. Different thickness of media can result in the different dependences of the shifts on the angle of incidence. At the positions where ε or µ is zero, due to the resonant effect, the GH shifts can be greatly enhanced.