Integration of femtosecond laser writen optical waveguides in a lab-on-chip

Rebecca Martinez Vazquez, Roberto Osellame, Daniela Nolli, C. Dongre, Hans H. van den Vlekkert, Roberta Ramponi, Markus Pollnau, Giulio Cerullo

    Research output: Contribution to journalArticleAcademicpeer-review

    109 Citations (Scopus)


    We use direct femtosecond laser writing to integrate optical waveguides into a commercial fused silica lab-on-chip(LOC). We fabricate high quality waveguides intersecting the microfluidic channels and use them to optically address with high spatial selectivity their content. Fluorescence from the photoexcited volume is efficiently collected at a 90° angle by a high numerical aperture fiber, resulting in a compact and portable setup. Our approach is quite powerful because it allows the integration of photonic functionalities, by simple post-processing, into commercial LOCs, fabricated with standard techniques. By taking advantage of the unique three-dimensional capabilities of femtosecond laser writing, more complex functionalities, such as splitters or Mach-Zehnder interferometers, can be implemented.
    Original languageEnglish
    Article number10.1039/b808360f
    Pages (from-to)91-96
    Number of pages6
    JournalLab on a chip
    Issue number1
    Publication statusPublished - 7 Jan 2009


    • EC Grant Agreement nr.: FP6/034562

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