Fabrication and characterization of hybrid-glass-based axicons

Terho Kololuoma, Kari Kataja, Sanna Juuso, Janne Aikio, Juha T. Rantala

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)


    We introduce a process for applying directly UV photopatternable materials and processing methods for the fabrication of binary diffractive optical elements.
    We design and model a binary axicon—an optical element that produces an almost diffraction free beam at a specified distance from the element. We also synthesize sol-gel-based hybrid glass materials and tailor their processing parameters to fit to the demands of the axicon design.
    A grating periodicity of 2 μm, an 850-nm structure depth, and certain morphological properties are required to meet the design parameters.
    The materials are synthesized using zirconium(IV)isopropoxide, methacrylic acid and methacryloxypropyltrimethoxysilane as deposition material precursors. We determine the morphological and shape characteristics of the fabricated axicons as a function of the lithographic exposure parameters. The optical characteristics of the axicons are measured in terms of the axial and radial intensity profiles.
    The difference between the modeled and measured results is explained.
    Original languageEnglish
    Pages (from-to)3136-3140
    JournalOptical Engineering
    Issue number12
    Publication statusPublished - 2002
    MoE publication typeA1 Journal article-refereed


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