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Optics Letters

Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 22 — Nov. 15, 2008
  • pp: 2653–2655

Visible photon-avalanche upconversion in Ho 3 + singly doped β Na ( Y 1.5 Na 0.5 ) F 6 under 980 nm excitation

Xiangfu Wang, Siguo Xiao, Yanyan Bu, Xiaoliang Yang, and J. W. Ding  »View Author Affiliations


Optics Letters, Vol. 33, Issue 22, pp. 2653-2655 (2008)
http://dx.doi.org/10.1364/OL.33.002653


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Abstract

Visible IR-to-green photon-avalanche upconversion is reported in an Ho 3 + singly doped β Na ( Y 1.5 Na 0.5 ) F 6 crystal under 980 nm excitation. Upconverted green, red, and IR emissions are observed at 540, 645, and 751 nm , respectively. Temporal evolution and excitation power dependent upconversion intensity are measured, suggesting that a photon-avalanche mechanism is responsible for the upconversion process. It is believed that an efficient cross relaxation ( S 2 5 , I 8 5 ) ( I 6 5 , I 6 5 ) mainly performs the population of I 6 5 excited state, resulting in the intense photon-avalanche upconversion emission in the synthesized samples.

© 2008 Optical Society of America

OCIS Codes
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
(190.7220) Nonlinear optics : Upconversion
(300.6550) Spectroscopy : Spectroscopy, visible

ToC Category:
Physical Optics

History
Original Manuscript: June 13, 2008
Revised Manuscript: September 8, 2008
Manuscript Accepted: September 19, 2008
Published: November 12, 2008

Citation
Xiangfu Wang, Siguo Xiao, Yanyan Bu, Xiaoliang Yang, and J. W. Ding, "Visible photon-avalanche upconversion in Ho3+ singly doped β−Na(Y1.5Na0.5)F6 under 980 nm excitation," Opt. Lett. 33, 2653-2655 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-22-2653

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