Tunneling of electromagnetic waves through a barrier with a periodic structure |
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Authors: | A H Gevorgyan R Ts Gabrielyan and M A Navasardyan |
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Institution: | 1.Yerevan State University,Yerevan,Armenia |
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Abstract: | The propagation of an electromagnetic wave through a barrier with a periodic structure is considered. An interesting manifestation
of electromagnetic wave tunneling through a barrier with a periodic structure is revealed. Specifically, it is theoretically
and experimentally shown that, when an electromagnetic wave passes through a medium with a periodic structure in the diffraction
mode within a photonic band gap, the field in the medium is localized near its boundaries. Theoretical calculations have been
performed for a cholesteric liquid crystal layer of finite thickness and for a 1D photonic crystal. The experiment was carried
out with perfect Si single crystals in reflection from the $
(2\bar 20)$
(2\bar 20)
and $
(4\bar 40)$
(4\bar 40) planes using MoK
α X rays. |
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Keywords: | |
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