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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 3 — Feb. 29, 2012

Enhancing upconverted white light in Tm3+/Yb3+/Ho3+-doped GdVO4 nanocrystals via incorporation of Li+ ions

Venkataramanan Mahalingam, Rafik Naccache, Fiorenzo Vetrone, and John A. Capobianco  »View Author Affiliations

Optics Express, Vol. 20, Issue 1, pp. 111-119 (2012)

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Abstract: The white light emission of Tm3+/Yb3+/Ho3+-doped GdVO4 nanocrystals, following excitation with near-infrared light (λexc = 980 nm), via a multiphoton upconversion process is presented. Upconverted blue emission from the Tm3+ ions as well as green/red emissions from the Ho3+ ions contributes to the observed white light. The calculated Commission internationale de l'éclairage (CIE) color coordinates were calculated to be x = 0.34; y = 0.32 and lie at the center of the white region. Furthermore, the intensity of the upconverted white light was enhanced by the incorporation of monovalent Li+ ions into the GdVO4 matrix. An explanation for this enhancement is proposed based on X-ray diffraction and fluorescence lifetime measurements.

© 2011 OSA

OCIS Codes
(160.4760) Materials : Optical properties
(300.2140) Spectroscopy : Emission
(160.4236) Materials : Nanomaterials

ToC Category:
Nonlinear Optics

Original Manuscript: October 24, 2011
Revised Manuscript: December 5, 2011
Manuscript Accepted: December 6, 2011
Published: December 19, 2011

Virtual Issues
Vol. 7, Iss. 3 Virtual Journal for Biomedical Optics

Venkataramanan Mahalingam, Rafik Naccache, Fiorenzo Vetrone, and John A. Capobianco, "Enhancing upconverted white light in Tm3+/Yb3+/Ho3+-doped GdVO4 nanocrystals via incorporation of Li+ ions," Opt. Express 20, 111-119 (2012)

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