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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 5 — May. 1, 2012
  • pp: 636–643

Near-infrared quantum splitting in Ho3+:LaF3 nanocrystals embedded germanate glass ceramic

W. J. Zhang, D. C. Yu, J. P. Zhang, Q. Qian, S. H. Xu, Z. M. Yang, and Q. Y. Zhang  »View Author Affiliations

Optical Materials Express, Vol. 2, Issue 5, pp. 636-643 (2012)

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We report on a sequential two-step near-infrared quantum splitting in Ho3+-doped germanate glass ceramics (GC). The formation of LaF3 nanocrystals is confirmed by X-ray diffraction and transmission electron microscopy analysis. Emission of two NIR photons at 1013 and 1190 nm for one incident photon absorption within the 300-560 nm region has been demonstrated by static and dynamic photoemission and excitation spectroscopy. Using the spectroscopic parameters calculated from Judd-Ofelt theory, the quantum efficiency of Ho3+ in GC sample is estimated to be approximately 110%.

© 2012 OSA

OCIS Codes
(140.4480) Lasers and laser optics : Optical amplifiers
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
(300.6340) Spectroscopy : Spectroscopy, infrared

ToC Category:
Nonlinear Optical Materials

Original Manuscript: February 8, 2012
Revised Manuscript: April 6, 2012
Manuscript Accepted: April 9, 2012
Published: April 13, 2012

W. J. Zhang, D. C. Yu, J. P. Zhang, Q. Qian, S. H. Xu, Z. M. Yang, and Q. Y. Zhang, "Near-infrared quantum splitting in Ho3+:LaF3 nanocrystals embedded germanate glass ceramic," Opt. Mater. Express 2, 636-643 (2012)

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