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Effective medium theory for kapitza stratified media: Diffractionless propagation (Articolo in rivista)
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- Label
- Effective medium theory for kapitza stratified media: Diffractionless propagation (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevLett.110.143901 (literal)
- Alternative label
Rizza, C. ab, Ciattoni, A. b (2013)
Effective medium theory for kapitza stratified media: Diffractionless propagation
in Physical review letters (Print)
(literal)
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- Rizza, C. ab, Ciattoni, A. b (literal)
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- a Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, Via Valleggio 11, 22100 Como, Italy
b Consiglio Nazionale Delle Ricerche, CNR-SPIN, 67100 Coppito L'Aquila, Italy (literal)
- Titolo
- Effective medium theory for kapitza stratified media: Diffractionless propagation (literal)
- Abstract
- We show that in the presence of a rapidly modulated dielectric permittivity with a large modulation depth (Kapitza medium) a novel and robust regime of diffractionless electromagnetic propagation occurs. This happens when the mean value to depth ratio of the dielectric profile is comparable to the small ratio between the modulation period and the wavelength. We show that the standard effective medium theory is inadequate to describe the proposed regime and that its occurrence is not substantially hampered by medium losses. We check the feasibility of the proposed regime by means of a large modulation depth metal-dielectric layered medium whose electromagnetic behavior is analytically investigated. © 2013 American Physical Society. (literal)
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