Luminous and tunable white-light upconversion for YAG (Yb3Al5O12) and (Yb, Y)2O3 nanopowders

Luminous and tunable white-light upconversion for YAG (Yb3Al5O12) and (Yb, Y)2O3 nanopowders

We report on multiphoton white-light upconversion in vacuum for Pechini synthesis Yb(3)Al(5)O(12) (YbAG) and combustion synthesis (Yb,Y(2))O(3) nanopowders under IR excitation. Their intense white-light upconversion is attributed to charge transfer luminescence superimposed upon a broadband emission...

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Veröffentlicht in:Optics letters 2010-12, Vol.35 (23), p.3922-3924
Hauptverfasser: JIWEI WANG, JIAN HUA HAO, TANNER, Peter A
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Sprache:eng
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Exact sciences and technology
Frequency conversion
harmonic generation, including high-order harmonic generation
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optics
Physics
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container_title Optics letters
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creator JIWEI WANG
JIAN HUA HAO
TANNER, Peter A
description We report on multiphoton white-light upconversion in vacuum for Pechini synthesis Yb(3)Al(5)O(12) (YbAG) and combustion synthesis (Yb,Y(2))O(3) nanopowders under IR excitation. Their intense white-light upconversion is attributed to charge transfer luminescence superimposed upon a broadband emission. Unlike common nanoscale phosphors, which show low luminescence efficiency, the intensity of white-light upconversion for nanopowders is similar to that of their bulk counterparts. The luminary efficacy of the upconversion is estimated to be 10-15 lm W(-1), and the Commission Internationale d'Eclairage (CIE) coordinates can be widely tuned by the excitation power, pressure, and codoping ratio. The nano-YbAG sample exhibits a longer buildup time for emission, a higher excitation threshold, and a wider CIE range than the oxide nanopowders.
doi_str_mv 10.1364/OL.35.003922
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subjects Exact sciences and technology
Frequency conversion
harmonic generation, including high-order harmonic generation
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optics
Physics
title Luminous and tunable white-light upconversion for YAG (Yb3Al5O12) and (Yb, Y)2O3 nanopowders
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