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Spectroscopic Imaging of Metal-Enhanced Upconversion on Plasmonic Substrates

Published online by Cambridge University Press:  14 February 2013

R.B. Anderson ,
J. Fisher ,
A. Hor ,
A. Lu ,
H. Paudel ,
K. Bayat ,
M. Baroughi ,
T-S. Luk ,
P.S. May  and
S. Smith
R.B. Anderson
Affiliation:
Nanoscience and Nanoengineering South Dakota School of Mines and Technology, Rapid City, SD 57701
J. Fisher
Affiliation:
Nanoscience and Nanoengineering South Dakota School of Mines and Technology, Rapid City, SD 57701
A. Hor
Affiliation:
Nanoscience and Nanoengineering South Dakota School of Mines and Technology, Rapid City, SD 57701
A. Lu
Affiliation:
Chemistry Department University of South Dakota, Vermillion, SD 57069
H. Paudel
Affiliation:
Electrical Engineering and Computer Science Department South Dakota State University, Brookings, SD 57007
K. Bayat
Affiliation:
Electrical Engineering and Computer Science Department South Dakota State University, Brookings, SD 57007
M. Baroughi
Affiliation:
Electrical Engineering and Computer Science Department South Dakota State University, Brookings, SD 57007
T-S. Luk
Affiliation:
Center for Integrated Nanotechnologies (CINT) Sandia National Laboratories, Albuquerque, NM 87185
P.S. May
Affiliation:
Chemistry Department University of South Dakota, Vermillion, SD 57069
S. Smith*
Affiliation:
Nanoscience and Nanoengineering South Dakota School of Mines and Technology, Rapid City, SD 57701
*
*Email: Steve_Smith@mailaps.org
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Abstract

We use spectroscopic imaging to investigate the enhancement of infra-red to visible upconversion in rare-earth doped nano-particles (NaYF4:Yb:Er) supported on nano-fabricated plasmonic substrates consisting of square lattices of Au nano-pillars fabricated by electron beam lithography and designed to support a surface plasmon polariton at frequencies which are nearresonant with the rare-earth ion (Yb3+) absorption. We observe a systematic enhancement in the efficiency of upconversion associated with the interaction of the co-doped nano-particles with the plasmonic substrate. Spectrally-resolved imaging provides a massively parallel means of assessing the range of achievable enhancement and its relation to the specific configuration of the substrate / upconverting nano-particle system. Spectrally-resolved reflectivity of the plasmonic substrates confirms the role of the surface plasmon polariton in the upconversion enhancement. Experimental results are compared to Finite Difference Time Domain simulations of the frequency-dependent reflectivity of these metallic nanostructures.

Keywords

infrared (IR) spectroscopylanthanideoptical
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1457: Symposium KK – Plasmonic Materials and Metamaterials , 2012 , mrss12-1457-kk11-34
Copyright
Copyright © Materials Research Society 2012

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