Abstract

We investigate the effect of surface plasmon (SP) resonance on Goos–Hanchen (GH) spatial and angular shifts in the reflection of a light beam by considering an attenuated total reflection structure containing a graphene layer. In particular, we find giant spatial and angular GH shifts for the $p$-wave light close to the plasmon resonance. The GH shifts can be controlled by adjusting the voltage applied to graphene via external gate. The giant and tunable GH shifts provide an alternative SP sensing scheme, which improves the sensitivity of SP sensors significantly.

© 2014 Optical Society of America

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