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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 6 — Mar. 15, 2010
  • pp: 6123–6130

Towards pure near-infrared to near-infrared upconversion of multifunctional GdF3:Yb3+,Tm3+ nanoparticles

Hon-Tung Wong, Helen Lai Wa Chan, and Jianhua Hao  »View Author Affiliations

Optics Express, Vol. 18, Issue 6, pp. 6123-6130 (2010)

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Nearly pure near-infrared to near-infrared (NIR-to-NIR) upconversion in GdF3 host with 23% Yb3+ and 1% Tm3+ under 980 nm excitation is firstly reported. The ratio of the intensity of the emission at 807 nm to that at 478 nm can reach to 105, and the intensity of the emission at 807 nm is preserved. Moreover, the excitation and the emission at 980 and 807 nm are away from the visible region. These are beneficial to deeper tissue penetration and reduced autofluorescence. Raman spectroscopy measurements suggest the high probability of NIR emission in GdF3 host. Our results indicate that the reported multifunctional nanoparticles are promising in bio-imaging and bio-separation.

© 2010 OSA

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(190.4180) Nonlinear optics : Multiphoton processes
(190.7220) Nonlinear optics : Upconversion

ToC Category:
Nonlinear Optics

Original Manuscript: January 7, 2010
Revised Manuscript: March 5, 2010
Manuscript Accepted: March 5, 2010
Published: March 11, 2010

Virtual Issues
Vol. 5, Iss. 7 Virtual Journal for Biomedical Optics

Hon-Tung Wong, Helen Lai Wa Chan, and Jianhua Hao, "Towards pure near-infrared to near-infrared upconversion of multifunctional GdF3:Yb3+,Tm3+ nanoparticles," Opt. Express 18, 6123-6130 (2010)

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