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Perfect-lens-material condition from adjacent absorptive and gain resonances
KTH, Skolan för informations- och kommunikationsteknik (ICT), Fotonik och optik.
2008 (engelsk)Inngår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 33, nr 7, s. 747-749Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We suggest, based on the principle of causality and for a material exhibiting adjacent absorptive and gain resonances, that there can be an intervening frequency where perfect imaging is in theory possible. At this frequency, both the dielectric constant and the permeability are negative, leading to a negative refractive index, and there is no loss. In such a material exhibiting a double resonance, the gain must be at the higher frequency. Through appropriate tuning of the refractive index, all propagating and evanescent fields from the object could then in principle be reconstructed at the image plane, subject to practical implementation limits.

sted, utgiver, år, opplag, sider
2008. Vol. 33, nr 7, s. 747-749
Emneord [en]
refraction
Identifikatorer
URN: urn:nbn:se:kth:diva-17473ISI: 000255227000038Scopus ID: 2-s2.0-42649130681OAI: oai:DiVA.org:kth-17473DiVA, id: diva2:335517
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QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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