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Optics Letters

Optics Letters


  • Vol. 33, Iss. 9 — May. 1, 2008
  • pp: 1014–1016

Two-photon-excited luminescence in a Tb 3 + -doped lithium niobate crystal pumped by a near-infrared femtosecond laser

Ai-Hua Li, Zhi-Ren Zheng, Qiang Lü, Liang Sun, Wen-Zhi Wu, Wei-Long Liu, Yan-Qiang Yang, and Tian-Quan Lü  »View Author Affiliations

Optics Letters, Vol. 33, Issue 9, pp. 1014-1016 (2008)

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Blue ( 487.6 nm ) , green ( 544.1 nm ) , yellow ( 582.1 nm ) , and red ( 623.6 nm ) upconversion (UC) luminescences are achieved in a Tb 3 + -doped lithium niobate crystal when an 800 nm femtosecond laser is loosely focused onto the sample at room temperature. The relationship between UC luminescence intensity and the pump energy indicates that a two-photon excitation process is dominant in this UC luminescence phenomenon. The Tb 3 + sensitive temperature dependence of the luminescence intensity is demonstrated via an obvious reduction of luminescence intensity with durative laser irradiation.

© 2008 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(160.5690) Materials : Rare-earth-doped materials
(190.7220) Nonlinear optics : Upconversion
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Nonlinear Optics

Original Manuscript: January 25, 2008
Manuscript Accepted: March 25, 2008
Published: April 30, 2008

Ai-Hua Li, Zhi-Ren Zheng, Qiang Lü, Liang Sun, Wen-Zhi Wu, Wei-Long Liu, Yan-Qiang Yang, and Tian-Quan Lü, "Two-photon-excited luminescence in a Tb3+-doped lithium niobate crystal pumped by a near-infrared femtosecond laser," Opt. Lett. 33, 1014-1016 (2008)

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