Lanthanide upconversion nanocrystals within microstructured optical fibres; a sensitive platform for biosensing and a new tool for nanocrystal characterisation

E. P. Schartner; D. Jin; H. Ebendorff-Heidepriem; J. A. Piper; T. M. Monro

doi:10.1117/12.915968

30 January 2012 Lanthanide upconversion nanocrystals within microstructured optical fibres; a sensitive platform for biosensing and a new tool for nanocrystal characterisation

E. P. Schartner, D. Jin, H. Ebendorff-Heidepriem, J. A. Piper, T. M. Monro

Author Affiliations +

Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83512Q (2012) https://doi.org/10.1117/12.915968
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

We investigate a powerful new sensing platform based on upconversion luminescence in NaYF4: Yb/Er nanocrystals loaded inside a suspended-core microstructured optical fibre. The use of a NIR source enables autofluorescence from the glass to be reduced compared to using visible sources for excitation of fluorescence. We demonstrate a substantial improvement in the detection limit that can be achieved in a suspended-core fibre sensor, with detection limits as low as 660 fM achieved. This is a factor of 15× better than the best results previously reported using Quantum dots in a similar fibre.

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E. P. Schartner, D. Jin, H. Ebendorff-Heidepriem, J. A. Piper, and T. M. Monro "Lanthanide upconversion nanocrystals within microstructured optical fibres; a sensitive platform for biosensing and a new tool for nanocrystal characterisation", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83512Q (30 January 2012); https://doi.org/10.1117/12.915968

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