Goos-Hanchen Shift of the Dispersive Chiral Metamaterials Based on Ω Particles

Abstract

In order to investigate the reflected beam shifts in the anisotropic chiral metamaterial based on the Ωparticle resonance model, we give the expression of the Goos-H?nchen(GH) shifts of reflected beam by using the stationary phase method. The numerical results show that for the incidence of the transverse magnetic wave, the relative GH shifts of co-polarization reflection are enhanced at two Brewster angles, and the enhancement peak of GH shift is larger corresponding to the large Brewster angle. Meanwhile, the enhancement of GH shifts at large Brewster angle is very sensitive to the thickness of the chiral material and incident frequency, the transition of the positive and negative enhancement of the GH shift can be realized by slightly adjusting the thickness or incident frequency. As the incident angle is fixed, the positive and negative transition of the co-polarization GH shifts at different thicknesses can be realized by selecting the appropriate incident frequency. In addition, for the fixed thickness of chiral materials, the positive and negative enhancement of the co-polarization GH shifts at different frequencies can be achieved by modifying the incident angles slightly.

Keywords

• goos-hanchen(gh) shift
• chiral metamaterial
• stationary phase method
• anisotropic