Negative index of refraction, perfect lenses and transformation optics - Some words of caution

Luzi Bergamin*, Alberto Favaro

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    5 Citations (Scopus)

    Abstract

    In this paper we show that a negative index of refraction is not a direct implication of transformation optics with orientation-reversing diffeomorphisms. Rather, a negative index appears due to a specific choice of sign freedom. Furthermore, we point out that the transformation designed lens, which relies on the concept of spacetime folding, does not amplify evanescent modes, in contrast to the Pendry-Veselago lens. Instead, evanescent modes at the image point are produced by a duplicated source and thus no imaging of the near field (perfect lensing) takes place.

    Original languageEnglish
    Title of host publicationSymposium Digest - 20th URSI International Symposium on Electromagnetic Theory, EMTS 2010
    Pages760-763
    Number of pages4
    DOIs
    Publication statusPublished - 27 Dec 2010
    MoE publication typeA4 Article in a conference publication
    EventURSI International Symposium on Electromagnetic Theory - Berlin, Germany
    Duration: 16 Aug 201019 Aug 2010
    Conference number: 20

    Conference

    ConferenceURSI International Symposium on Electromagnetic Theory
    Abbreviated titleEMTS
    CountryGermany
    CityBerlin
    Period16/08/201019/08/2010

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