Micro-LED waveguide for fluorescence applications

Farrell, Francesca Ann and Xie, Enyuan and Guilhabert, Benoit and Haughey, Anne-Marie and Dawson, Martin D. and Laurand, Nicolas; (2019) Micro-LED waveguide for fluorescence applications. In: 2019 IEEE Photonics Conference (IPC). IEEE Photonics Conference (IPC) . IEEE, USA. ISBN 978-1-7281-0615-1

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    A micro-LED-coupled multimode slab waveguide is reported for fluorescence sensing. The device consists of a 1-dimensional micro-LED array coupled to a sub-mm polymeric slab for evanescent excitation of fluorescent analytes present on the surface. Proof-principle detection of semiconductor nanocrystals down to 0.2 pM/cm2 is demonstrated.