Wave propagation and tunneling through periodic structures

Konoplev, I. V.; MacInnes, P.; Cross, A. W.; Phelps, A. D. R.; Fisher, L.; Ronald, K.
December 2008
Applied Physics Letters;12/8/2008, Vol. 93 Issue 23, p231110
Academic Journal
The phenomenon of tunneling manifests itself in nearly every field of physics. The ability to distinguish a wave tunneling through a barrier from one propagating is important for a number of applications. Here we explore the properties of the wave traveling through the band gap created by a lattice, either as a consequence of tunneling through the barrier or due to the presence of a pass band inside the gap. To observe the pass band for studying tunneling and propagating waves simultaneously, a localized lattice defect was introduced. The differences between the two phenomena are highlighted via waves’ dispersion characteristics.


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