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Proceedings Paper

Lanthanide upconversion nanocrystals within microstructured optical fibres; a sensitive platform for biosensing and a new tool for nanocrystal characterisation
Author(s): E. P. Schartner; D. Jin; H. Ebendorff-Heidepriem; J. A. Piper; T. M. Monro
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Paper 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.

Paper Details

Date Published: 31 January 2012
PDF: 4 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83512Q (31 January 2012); doi: 10.1117/12.915968
Show Author Affiliations
E. P. Schartner, The Univ. of Adelaide (Australia)
D. Jin, Macquarie Univ. (Australia)
H. Ebendorff-Heidepriem, The Univ. of Adelaide (Australia)
J. A. Piper, Macquarie Univ. (Australia)
T. M. Monro, The Univ. of Adelaide (Australia)


Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference

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