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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 14 — Jul. 15, 2010
  • pp: 2442–2444

Ultraviolet upconversion fluorescence of Er 3 + induced by 1560 nm laser excitation

Kezhi Zheng, Dan Zhao, Daisheng Zhang, Ning Liu, and Weiping Qin  »View Author Affiliations


Optics Letters, Vol. 35, Issue 14, pp. 2442-2444 (2010)
http://dx.doi.org/10.1364/OL.35.002442


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Abstract

We observed multiphoton upconversion (UC) emissions from the high-energy states ( I 11 / 2 2 , D 7 / 2 4 , G 9 / 2 4 , D 5 / 2 2 , K 13 / 2 2 , and P 3 / 2 2 ) of Er 3 + ions in Yb 3 + - Er 3 + codoped β - Na YF 4 microcrystals under 1560 nm excitation. Analysis indicated that the highest-order emissions came from 11-photon UC processes. In the codoped system, the energy transfer (ET) from Er 3 + ( I 11 / 2 4 ) to Yb 3 + ( F 5 / 2 2 ) and subsequently the back ET from Yb 3 + to Er 3 + played important roles in populating these high-energy states of Yb 3 + and Er 3 + . Several different UC processes work simultaneously to populate excited Er 3 + in this codoped sample.

© 2010 Optical Society of America

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

ToC Category:
Nonlinear Optics

History
Original Manuscript: May 5, 2010
Revised Manuscript: June 12, 2010
Manuscript Accepted: June 14, 2010
Published: July 12, 2010

Citation
Kezhi Zheng, Dan Zhao, Daisheng Zhang, Ning Liu, and Weiping Qin, "Ultraviolet upconversion fluorescence of Er3+ induced by 1560 nm laser excitation," Opt. Lett. 35, 2442-2444 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-14-2442


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