Research Papers

Tunneling of ultradirective radiation in metamaterials with zero-average index bandgap

[+] Author Affiliations
Vito Mocella

CNR- IMM Unità di Napoli, via P. Castellino 111, 80131 Napoli, Italy

J. Nanophoton. 5(1), 053524 (October 13, 2011). doi:10.1117/1.3646925
History: Received April 27, 2011; Revised September 14, 2011; Accepted September 16, 2011; Published October 13, 2011; Online October 13, 2011
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In a zero-average refractive index metamaterial the light propagation is forbidden and a narrow full photonic bandgap is open in correspondence of the frequency where it vanishes and the refractive index is averaged over the volume. However, it should be underlined that Fabry–Pérot resonances can open a propagation state inside such a particular type of bandgap. Based on a photonic crystal exhibiting a negative refractive index, it was found that such Fabry–Pérot resonant states allow images transmission with subwavelength details.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Vito Mocella
"Tunneling of ultradirective radiation in metamaterials with zero-average index bandgap", J. Nanophoton. 5(1), 053524 (October 13, 2011). ; http://dx.doi.org/10.1117/1.3646925


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