Abstract
The Goos–Hänchen (GH) shift in one-dimensional photonic crystal (1DPC), composed of alternate ε-negative and μ-negative materials, is theoretically investigated. It is demonstrated that larger shifts can be obtained when surface modes are excited. It is also found that the magnitude of the lateral GH shift is closely related to intrinsic loss factor. The results show that for a definite value of loss and for values larger than that, backward surface waves which lead to negative lateral GH shifts can be excited. On the other hand, there are large positive GH shifts for small loss factor less than aforementioned definite loss. The GH shift is very sensitive to the thickness of air gap which is necessary to excitation of the surface waves.
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