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Effective spectral dispersion of refractive index modulation
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SYSNO ASEP 0475295 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effective spectral dispersion of refractive index modulation Author(s) Vojtíšek, Petr (UFP-V) RID
Květoň, M. (CZ)
Richter, I. (CZ)Article number 045603 Source Title Journal of Optics. - : Institute of Physics Publishing - ISSN 2040-8978
Roč. 19, č. 4 (2017)Number of pages 7 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords volume gratings ; holography ; dispersion ; refractive index modulation Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects LO1206 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 UT WOS 000398588600002 EID SCOPUS 85016159972 DOI 10.1088/2040-8986/aa6092 Annotation 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. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2018
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