http://www.cnr.it/ontology/cnr/individuo/prodotto/ID207587
Terahertz active spatial filtering through optically tunable hyperbolic metamaterials (Articolo in rivista)
- Type
- Label
- Terahertz active spatial filtering through optically tunable hyperbolic metamaterials (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Alternative label
Carlo Rizza,1,2 Alessandro Ciattoni,2,* Elisa Spinozzi,3 and Lorenzo Columbo1,4 (2012)
Terahertz active spatial filtering through optically tunable hyperbolic metamaterials
in Optics letters
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Carlo Rizza,1,2 Alessandro Ciattoni,2,* Elisa Spinozzi,3 and Lorenzo Columbo1,4 (literal)
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- http://dx.doi.org/10.1364/OL.37.003345 (literal)
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- 1Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, Via Valleggio 11, 22100 Como, Italy
2Consiglio Nazionale delle Ricerche, CNR-SPIN, 67100 Coppito L'Aquila, Italy
3 University of Rome \"La Sapienza\", Department of Information Engineering Electronics and Telecommunications, Via Eudossiana 18, 00184 Roma, Italy
4 Consiglio Nazionale delle Ricerche, CNR-IFN, 70126 Bari, Italy (literal)
- Titolo
- Terahertz active spatial filtering through optically tunable hyperbolic metamaterials (literal)
- Abstract
- We theoretically consider infrared-driven hyperbolic metamaterials able to spatially filter terahertz (THz) radiation. The metamaterial is a slab made of alternating semiconductor and dielectric layers whose homogenized uniaxial response, at THz frequencies, shows principal permittivities of different signs. The gap provided by metamaterial hyperbolic dispersion allows the slab to stop spatial frequencies within a bandwidth tunable by changing the infrared radiation intensity. We numerically prove the device functionality by resorting to full wave simulation coupled to the dynamics of charge carries photoexcited by infrared radiation in semiconductor layers. (literal)
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