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    Hollow core waveguide as mid-infrared laser modal beam filter

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    Author
    Patimisco, P.
    Sampaolo, A.
    Giglio, M.
    Kriesel, J.M.
    Tittel, F.K.
    Spagnolo, V.
    Date
    2015
    Citation
    Patimisco, P., Sampaolo, A., Giglio, M., et al., . "Hollow core waveguide as mid-infrared laser modal beam filter." Journal of Applied Physics, 118, no. 11 (2015) http://dx.doi.org/10.1063/1.4930893.
    Published Version
    http://dx.doi.org/10.1063/1.4930893
    Abstract
    A novel method for mid-IR laser beam mode cleaning employing hollow core waveguide as a modal filter element is reported. The influence of the input laser beam quality on fiber optical losses and output beam profile using a hollow core waveguide with 200 μm-bore size was investigated. Our results demonstrate that even when using a laser with a poor spatial profile, there will exist a minimum fiber length that allows transmission of only the Gaussian-like fundamental waveguide mode from the fiber, filtering out all the higher order modes. This essentially single mode output is preserved also when the waveguide is bent to a radius of curvature of 7.5 cm, which demonstrates that laser mode filtering can be realized even if a curved light path is required.
    Type
    Journal article
    Citable link to this page
    http://hdl.handle.net/1911/94236
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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892