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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 3942–3945

Intense 2.8  μm emission of Ho3+ doped PbF2 single crystal

Peixiong Zhang, Jigang Yin, Baitao Zhang, Lianhan Zhang, Jiaqi Hong, Jingliang He, and Yin Hang  »View Author Affiliations

Optics Letters, Vol. 39, Issue 13, pp. 3942-3945 (2014)

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A Ho3+-doped PbF2 mid-IR laser crystal was successfully grown using the vertical Bridgman method. An intense 2.8 μm emission in Ho:PbF2 crystal was observed for the first time. By analyzing the absorption and emission measurements of the Ho:PbF2 crystal with the Judd–Ofelt theory, the intensity parameters Ω2,4,6, exited state lifetimes, branching ratios, and emission cross-sections were calculated. It is found that the Ho:PbF2 crystal has high fluorescence branching ratio (20.99%), large emission cross section (1.44×1020cm2), long fluorescence lifetime (5.4 ms), and high quantum efficiency (88.4%) corresponding to the stimulated emission of Ho3+: I65I75 transition. The structure of Ho:PbF2 crystal was also analyzed by the Raman spectrum, and it was found that the Ho:PbF2 crystal possesses low phonon energy of 257cm1. We propose that the Ho:PbF2 crystal may be a promising material for 2.8 μm laser applications.

© 2014 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(160.4760) Materials : Optical properties
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(300.6340) Spectroscopy : Spectroscopy, infrared

ToC Category:

Original Manuscript: April 21, 2014
Revised Manuscript: May 23, 2014
Manuscript Accepted: May 23, 2014
Published: June 26, 2014

Peixiong Zhang, Jigang Yin, Baitao Zhang, Lianhan Zhang, Jiaqi Hong, Jingliang He, and Yin Hang, "Intense 2.8  μm emission of Ho3+ doped PbF2 single crystal," Opt. Lett. 39, 3942-3945 (2014)

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