Abstract
In this work, we theoretically study the Goos–Hänchen effect of the reflected and transmitted light in an epsilon-near-zero (ENZ) slab. For a lossless ENZ slab, it is found that the Goos–Hänchen shifts are greatly enhanced near resonances for both TE- and TM-polarized beams, which is approximately inverse to the sufficiently small (but finite) value of permittivity. In a lossy ENZ slab, the reflected and transmitted GH shifts are different near resonances, and there are large negative GH shifts for the reflected beam and large positive shifts in the transmitted beam, and the detailed properties are discussed. There is similar behavior near the Brewster angle for TM-polarized light in both the lossy and lossless ENZ slabs. Compared with the results in the semi-infinite ENZ structure, our results may provide the richer control on the GH shifts in ENZ slabs and are potentially useful to design the ENZ-based optical devices.
© 2017 Optical Society of America
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