Anomalous lateral beam shift and total absorption due to excitation
of surface waves in materials with negative refraction |
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Authors: | S M Vuković N B Aleksić D V Timotijević |
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Institution: | (1) Institute of Physics, P.O.Box 57, 11001 Belgrade, Serbia and Montenegro |
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Abstract: | We studied electromagnetic beam reflection from layered
structures that include materials with negative refraction. Excitation of
leaky surface waves leads to the formation of anomalous lateral shifts in the reflected beams
with single or double peak structures. The presence of reasonable losses
within material with negative refraction, besides significant influence on
manifestation of the giant lateral shifts, can lead to their total
suppression and anomalously high absorption of the incident radiation. If,
in addition to the resonant excitation of leaky surface waves, radiation
inflow exactly compensates their irreversible damping, total absorption of the incoming
radiation can be achieved for moderately wide beams. |
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Keywords: | 78 68 +m Optical properties of surfaces 42 25 Bs Wave propagation transmission and absorption 42 79 Gn Optical waveguides and couplers |
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