Počet záznamů: 1  

Effective spectral dispersion of refractive index modulation

  1. 1. 0475295 - UFP-V 2018 RIV GB eng J - Článek v odborném periodiku
    Vojtíšek, Petr - Květoň, M. - Richter, I.
    Effective spectral dispersion of refractive index modulation.
    Journal of Optics. Roč. 19, č. 4 (2017), č. článku 045603. ISSN 2040-8978
    Grant CEP: GA MŠk(CZ) LO1206
    Institucionální podpora: RVO:61389021
    Klíčová slova: volume gratings * holography * dispersion * refractive index modulation
    Kód oboru RIV: BH - Optika, masery a lasery
    Obor OECD: Optics (including laser optics and quantum optics)
    Impakt faktor: 2.323, rok: 2017

    For diffraction effects inside photopolymer materials, which act as volume diffraction systems (e.g. gratings), refractive index modulation is one of the key parameters. Due to its importance it is necessary to study this parameter from many perspectives, one of which is its value for different spectral components, i.e. its spectral dispersion. In this paper, we discuss this property and present an approach to experimental and numerical extraction and analysis (via rigorous coupled wave analysis and Cauchy’s empirical relation) of the effective dispersion of refractive index modulation based on an analysis of transmittance maps measured in an angular-spectral plane. It is indicated that the inclusion of dispersion leads to a significantly better description of the real grating behavior (which is often necessary in various design implementations of diffraction gratings) and that this estimation can be carried out for all the diffraction orders present.
    Trvalý link: http://hdl.handle.net/11104/0272136