摘要
The Goos Hanchen displacement of a light beam transmitting through an indefinite metamaterial slab is studied. The results indicate that the displacement would be negative or positive for different parameters, and the necessary conditions for negative or positive displacements are summarized. Due to the special anisotropic properties, the directions of displacements for different polarization beams are opposite by proper design. In addition, the simultaneously enhanced positive and negative displacements will appear at different resonant angles under consideration of the active slab. These phenomena could have convenient applications in optical devices.
The Goos Hanchen displacement of a light beam transmitting through an indefinite metamaterial slab is studied. The results indicate that the displacement would be negative or positive for different parameters, and the necessary conditions for negative or positive displacements are summarized. Due to the special anisotropic properties, the directions of displacements for different polarization beams are opposite by proper design. In addition, the simultaneously enhanced positive and negative displacements will appear at different resonant angles under consideration of the active slab. These phenomena could have convenient applications in optical devices.
基金
Supported in part by the National Natural Science Foundation of China （60877055 and 60806041）, the Science and Technology Commission of Shanghai Municipal （08JC1409701 and 08QA14030）, the Shanghai Educational Development Foundation （2007CG52）, and the Shanghai Leading Academic Discipline Project （S30105）. We thank Professor Li Chun-Fang and Dr. Chen Xi for motivating this work. We also indebted to the anonymous referees for helpful suggestions.
