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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 19 — Oct. 1, 2008
  • pp: 2167–2169

Ultraviolet upconversion fluorescence from D J 6 of Gd 3 + induced by 980 nm excitation

Weiping Qin, Chunyan Cao, Lili Wang, Jisen Zhang, Daisheng Zhang, Kezhi Zheng, Yan Wang, Guodong Wei, Guofeng Wang, Peifen Zhu, and Ryongjin Kim  »View Author Affiliations


Optics Letters, Vol. 33, Issue 19, pp. 2167-2169 (2008)
http://dx.doi.org/10.1364/OL.33.002167


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Abstract

Ultraviolet upconversion emissions of 246.2 and 252.8 nm from D J 6 levels of Gd 3 + ions were observed in Gd F 3 : 10% Yb 3 + , 0.7% Tm 3 + nanocrystals under 980 nm excitation from a laser diode. The D J 6 levels of Gd 3 + ions can be efficiently populated by energy transfer processes of Yb Tm Gd and Yb Gd . A six-photon upconversion process was confirmed by the dependence of 252.8 nm emission intensity on the pumping power. The upconversion mechanism in the six-photon process was discussed based on excited state absorption of Gd 3 + ions, cross relaxation energy transfer between two excited Gd 3 + ions, and energy transfer between Gd 3 + and Yb 3 + or Tm 3 + ions.

© 2008 Optical Society of America

OCIS Codes
(190.7220) Nonlinear optics : Upconversion
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Spectroscopy

History
Original Manuscript: June 5, 2008
Revised Manuscript: August 4, 2008
Manuscript Accepted: August 16, 2008
Published: September 18, 2008

Citation
Weiping Qin, Chunyan Cao, Lili Wang, Jisen Zhang, Daisheng Zhang, Kezhi Zheng, Yan Wang, Guodong Wei, Guofeng Wang, Peifen Zhu, and Ryongjin Kim, "Ultraviolet upconversion fluorescence from 6DJ of Gd3+ induced by 980 nm excitation," Opt. Lett. 33, 2167-2169 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-19-2167


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