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2012
Journal Article
Titel
Klein tunneling of light in waveguide superlattices
Abstract
We present an experimental observation of Klein tunneling of light waves in lattices of evanescently coupled waveguides with a superimposed potential step. The incident wave packet "mass" which is a characteristic feature of Klein tunneling is generated by a minigap in the band structure of the lattice. We studied different masses and measured the tunneling rates across the potential step.
Author(s)