Spectral signatures of chirality

Jesper Goor Pedersen, Asger Mortensen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    We present a new way of measuring chirality, via the spectral shift of photonic band gaps in one-dimensional structures. We derive an explicit mapping of the problem of oblique incidence of circularly polarized light on a chiral one-dimensional photonic crystal with negligible index contrast to the formally equivalent problem of linearly polarized light incident on-axis on a non-chiral structure with index contrast. We derive analytical expressions for the first-order shifts of the band gaps for negligible index contrast. These are modified to give good approximations to the band gap shifts also in the case of appreciable index contrast. We believe that this may potentially be used for measuring enantiomeric excess.
    Original languageEnglish
    Title of host publicationProceedings, Metamaterials: Fundamentals and applications II
    Volume7392
    PublisherSPIE - International Society for Optical Engineering
    Publication date2009
    DOIs
    Publication statusPublished - 2009
    EventMetamaterials: Fundamentals and applications II - San Diego, CA., USA
    Duration: 1 Jan 2009 → …
    Conference number: 739208

    Conference

    ConferenceMetamaterials: Fundamentals and applications II
    Number739208
    CitySan Diego, CA., USA
    Period01/01/2009 → …

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