Ethan A Gibson et al 2011 J. Opt. 13 024013 doi:10.1088/2040-8978/13/2/024013
Ethan A Gibson1, Matthew Pennybacker2, Andrei I Maimistov3, Ildar R Gabitov2 and Natalia M Litchinitser1,4
Show affiliationsWe perform a detailed study of the phenomenon of resonant absorption that occurs at an oblique incidence in the vicinity of the zero refractive index transition in graded index metamaterials with the refractive index changing from positive to negative values. We compare the results of numerical simulations with analytical predictions for the case of the linear gradient index profile. Furthermore, we numerically study the transition phenomena in graded index layers with more complex index profiles. A detailed understanding of the phenomenon of resonant absorption may be of considerable importance in the context of transformation optics as it strongly modifies the field distribution near the zero index transition.
Issue 2 (February 2011)
Received 29 June 2010, accepted for publication 13 September 2010
Published 30 November 2010
Ethan A Gibson et al 2011 J. Opt. 13 024013
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