Issue 1, 2009
From the journal:

Lab on a Chip

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

Rebeca Martinez Vazquez,a   Roberto Osellame,*a   Daniela Nolli,a   Chaitanya Dongre,b   Hans van den Vlekkert,c   Roberta Ramponi,a   Markus Pollnaub  and  Giulio Cerulloa  

* Corresponding authors

a Istituto di Fotonica e Nanotecnologie - CNR, Dipartimento di Fisica - Politecnico di Milano, Piazza L. da Vinci, 32, Milano, 20133, Italy
E-mail: roberto.osellame@polimi.it

b Integrated Optical MicroSystems, MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands

c LioniX BV, PO Box 456, 7500 AL Enschede, The Netherlands

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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Article information

DOI
https://doi.org/10.1039/B808360F
Article type
Paper
Submitted
19 May 2008
Accepted
30 Sep 2008
First published
06 Nov 2008

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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