Direct laser writing for nanoporous liquid core laser sensors

Tobias Grossmann, Mads Brøkner Christiansen, Jeffrey Peterson, Heinz Kalt, Timo Mappes, Anders Kristensen

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    We report the fabrication of nanoporous liquid core lasers via direct laser writing based on two-photon absorption in combination with thiolene-chemistry. As gain medium Rhodamine 6G was embedded in the nanoporous polybutadiene matrix. The lasing devices with thresholds of 19 µJ/mm2 were measured to have bulk refractive index sensitivities of 169 nm/RIU at a laser wavelength of 600 nm, demonstrating strongly increased overlap of the modes with the analyte in comparison to solid state evanescent wave sensors.
    Original languageEnglish
    JournalOptics Express
    Issue number16
    Pages (from-to)17467-17473
    Publication statusPublished - 2012

    Bibliographical note

    This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


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