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Issue 1, 2009
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Integration of femtosecond laser written optical waveguides in a lab-on-chip

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Abstract

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.

Graphical abstract: Integration of femtosecond laser written optical waveguides in a lab-on-chip

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Publication details

The article was received on 19 May 2008, accepted on 30 Sep 2008 and first published on 06 Nov 2008


Article type: Paper
DOI: 10.1039/B808360F
Citation: Lab Chip, 2009,9, 91-96
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    Integration of femtosecond laser written optical waveguides in a lab-on-chip

    R. M. Vazquez, R. Osellame, D. Nolli, C. Dongre, H. van den Vlekkert, R. Ramponi, M. Pollnau and G. Cerullo, Lab Chip, 2009, 9, 91
    DOI: 10.1039/B808360F

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