Abstract
The Goos–Hanchen shifts at the surface of the tilted uniaxial crystals have been studied with the help of the stationary phase method. It is found that the permittivity and the optical axis of the uniaxial crystal have outstanding influence on the Goos–Hanchen shift. The numerical results show that the negative Goos–Hanchen shift can occur even when the refractive index of the material is not negative. Besides, the Goos–Hanchen shift can be negative or positive infinite under certain conditions. Our results may provide useful information in manipulating the Goos–Hanchen shift in uniaxial crystals. We believe this method could find practical applications in tunable sensors and switches, which are based on Goos–Hanchen shifts.
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