Abstract
Tunable Goos-Hänchen (GH) effect with magneto-optical (MO) effect in a prism-graphene coupling structure is proposed. Based on MO effect of graphene in terahertz region, GH effect can be modulated by applied magnetic fields. The GH shift is calculated by stationary phase method and verified by finite-element method (FEM). The physical mechanism of MO modulation for GH effect in the prism-graphene coupling structure is also analyzed based on the interaction between graphene and incident light. GH effect based on Kerr rotation may have great potential in the application of optical rotation displacement modulation and sensing. Meanwhile tunable GH effect in graphene shows a big potential in the measurement of Fermi energy or relaxation time of graphene. It provides us an effective method to facilitate its design and applications in terahertz devices and systems.
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