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Proceedings Paper

Upconversion nanophotonics (Conference Presentation)
Author(s): Shuang Fang Lim; Janina Wirth; Kory Green; Megan O'Connor
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Paper Abstract

Infrared excited and visible emitting upconverting nanoparticles show potential applications in the fields of photovoltaics, and in single molecule bio-imaging. We show enhanced upconversion luminescence, of up to 50-fold, at the single particle level, via subwavelength interference of the infrared excitation and visible emission. Single particle upconverted spectra and time-resolved decay, correlated with AFM, show enhanced emission at 545nm and 650 nm, whereby the magnitude of the enhancement is dependent on the thickness of the interference layer, and on the excitation intensity. We correlate our experimental results with finite element modeling showing both enhanced excitation and emission as a function of the interference layer thickness.

Paper Details

Date Published: 2 November 2016
PDF: 1 pages
Proc. SPIE 9956, Ultrafast Nonlinear Imaging and Spectroscopy IV, 99560G (2 November 2016); doi: 10.1117/12.2238583
Show Author Affiliations
Shuang Fang Lim, North Carolina State Univ. (United States)
Janina Wirth, North Carolina State Univ. (United States)
Kory Green, North Carolina State Univ. (United States)
Megan O'Connor, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 9956:
Ultrafast Nonlinear Imaging and Spectroscopy IV
Zhiwen Liu, Editor(s)

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Upconversion nanophotonics (Conference Presentation)

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