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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 25 — Dec. 5, 2011
  • pp: 25471–25478

Upconversion emissions from high-energy states of Eu3+ sensitized by Yb3+ and Ho3+ in β-NaYF4 microcrystals under 980 nm excitation

Lili Wang, Zhenyu Liu, Zhe Chen, Dan Zhao, Guanshi Qin, and Weiping Qin  »View Author Affiliations


Optics Express, Vol. 19, Issue 25, pp. 25471-25478 (2011)
http://dx.doi.org/10.1364/OE.19.025471


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Abstract

Under 980 nm excitation, multiple ultraviolet and visible upconversion luminescence from Ho3+ and Eu3+ ions were observed in Yb3+/Ho3+/Eu3+ tri-doped NaYF4 microcrystals (MCs). The high-energy states (5H3-7, 5L6, 5D3 and 5D2) of Eu3+ ions could be efficiently populated by two-step energy transfer (ET) processes of Yb Ho Eu. Four-, three-, two-photon UC processes of Eu3+ ions were confirmed by the dependence of 5H3-7, 5L6 and 5D0 levels emission intensities on the pumping power.

© 2011 OSA

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 13, 2011
Revised Manuscript: November 9, 2011
Manuscript Accepted: November 14, 2011
Published: November 29, 2011

Citation
Lili Wang, Zhenyu Liu, Zhe Chen, Dan Zhao, Guanshi Qin, and Weiping Qin, "Upconversion emissions from high-energy states of Eu3+ sensitized by Yb3+ and Ho3+ in β-NaYF4 microcrystals under 980 nm excitation," Opt. Express 19, 25471-25478 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-25-25471


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