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    Rapid prototyping of grating magneto-optical traps using a focused ion beam

    86069.pdf (3.027Mb)
    Access Status
    Open access
    Authors
    Sun, Xiao
    Rickard, William
    Sparkes, Ben
    White, Ben
    Offer, Rachel
    Luiten, Andre
    Ironside, Charlie
    Date
    2021
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sun, X. and Rickard, W. and Sparkes, B. and White, B. and Offer, R. and Luiten, A. and Ironside, C. 2021. Rapid prototyping of grating magneto-optical traps using a focused ion beam. Optics Express. 29 (23): pp. 37733-37746.
    Source Title
    Optics Express
    DOI
    10.1364/OE.439479
    ISSN
    1094-4087
    Faculty
    Faculty of Science and Engineering
    School
    John de Laeter Centre (JdLC)
    Remarks

    © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

    URI
    http://hdl.handle.net/20.500.11937/86248
    Collection
    • Curtin Research Publications
    Abstract

    We have developed a rapid prototyping approach for creating custom grating magneto-optical traps using a dual-beam system combining a focused ion beam and a scanning electron microscope. With this approach we have created both one- and two-dimensional gratings of up to 400 µm × 400 µm in size with structure features down to 100 nm, periods of 620 nm, adjustable aspect ratios (ridge width : depth ∼ 1 : 0.3 to 1 : 1.4) and sidewall angles up to 71°. The depth and period of these gratings make them suitable for holographic trapping and cooling of neutral ytterbium on the 1S0 → 1P1 399 nm transition. Optical testing of the gratings at this wavelength has demonstrated a total first order diffraction of 90% of the reflected light. This work therefore represents a fast, high resolution, programmable and maskless alternative to current photo and electron beam lithography-based procedures and provides a time efficient process for prototyping of small period, high aspect ratio grating magneto-optical traps and other high resolution structures.

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