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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 8 — Apr. 15, 2007
  • pp: 991–993

Evidence for visible quantum cutting via energy transfer in Sr Al 12 O 19 : Pr , Cr

Zhaogang Nie, Jiahua Zhang, Xia Zhang, Xinguang Ren, Guobin Zhang, and Xiao-jun Wang  »View Author Affiliations


Optics Letters, Vol. 32, Issue 8, pp. 991-993 (2007)
http://dx.doi.org/10.1364/OL.32.000991


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Abstract

Evidence for visible quantum cutting involving the emission of two visible photons for each vacuum-ultraviolet (VUV) photon absorbed is demonstrated in Sr Al 12 O 19 : Pr , Cr using synchrotron radiation as one of the excitation sources. Upon VUV excitation of the 4 f 5 d states of Pr 3 + , quantum cutting could occur by a two-step energy transfer from Pr 3 + to Cr 3 + by cross relaxation and sequential transfer of the remaining excitation energy. A theoretical visible quantum efficiency of 147% is estimated in Sr Al 12 O 19 : 2 % Pr,5% Cr, suggesting the possibility of a VUV phosphor with visible quantum efficiency higher than 100% based on Pr 3 + Cr 3 + pair in oxide materials.

© 2007 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Spectroscopy

History
Original Manuscript: December 5, 2006
Revised Manuscript: January 18, 2007
Manuscript Accepted: January 23, 2007
Published: March 19, 2007

Citation
Zhaogang Nie, Jiahua Zhang, Xia Zhang, Xinguang Ren, Guobin Zhang, and Xiao-jun Wang, "Evidence for visible quantum cutting via energy transfer in SrAl12O19:Pr,Cr," Opt. Lett. 32, 991-993 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-8-991


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