Design of all-glass multilayer phase gratings for cylindrical microlenses

We introduce a design method for diffractive cylindrical microlenses fabricated with a new technology similar to the fabrication of all-solid photonic crystal fibers. Unlike conventional microlenses that are fabricated with etching methods and thus have a step-index profile, the refractive index of...

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Bibliographic Details
Published in:Optics letters 2009-06, Vol.34 (11), p.1681-1683
Main Authors: HUDELIST, Florian, WADDIE, Andrew J, TAGHIZADEH, Mohammad R
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lenses, prisms, and mirrors
Micro- and nanooptical devices
Optical elements, devices, and systems
Optics
Physics
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Summary:We introduce a design method for diffractive cylindrical microlenses fabricated with a new technology similar to the fabrication of all-solid photonic crystal fibers. Unlike conventional microlenses that are fabricated with etching methods and thus have a step-index profile, the refractive index of each layer can be individually designed. We study the transmitted field of such nonperiodic lamellar phase grating. By using the field-stitching method we can suppress the effect of periodic boundary conditions of the Fourier modal method when calculating the transmitted field of nonperiodic lamellar phase elements. We suggest an algorithm to design multilayer phase elements, which act as cylindrical lenses. We show experimental and theoretical data for a diffraction-limited lens.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.34.001681