Stripe-geometry two-dimensional Dammann gratings

Jari Turunen, Antti Vasara, Jan Westerholm, Arto Salin

    Research output: Contribution to journalArticle

    27 Citations (Scopus)


    We propose a new 2D generalization of the concept of Dammann grating [H. Dammann and K. Görtler, Optics Comm. 3 (1971) 321] which opens up the possibility of generating 2D patterns of discrete light spots with low reconstruction error and high diffraction efficiency, typically ≈ 30% in arbitrary (off-axis), and ≈ 60% in inversion symmetric (on-axis) patterns.
    Optimization of such interconnect hologram structures by stochastic algorithms is shown to be feasible for (arbitrary) image sizes up to about 20 X 20 to 30 X 30 on desktop computers.
    Experimental verification is provided by reconstructing an arbitrary pattern of 20 X 21 spots with a grating fabricated by conventional photolithographic techniques
    Original languageEnglish
    Pages (from-to)245-252
    JournalOptics Communications
    Issue number3-4
    Publication statusPublished - 1989
    MoE publication typeA1 Journal article-refereed


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