Deactivation effects of the lowest excited state of Ho3+ at 2.9 μm emission introduced by Pr3+ ions in LiLuF4 crystal

doi:10.1364/OL.37.005241

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

Editor: Alan E. Willner
Vol. 37, Iss. 24 — Dec. 15, 2012
pp: 5241–5243

Deactivation effects of the lowest excited state of Ho³⁺ at 2.9 μm emission introduced by Pr³⁺ ions in LiLuF₄ crystal

Peixiong Zhang, Yin Hang, and LianHan Zhang »View Author Affiliations

Optics Letters, Vol. 37, Issue 24, pp. 5241-5243 (2012)
http://dx.doi.org/10.1364/OL.37.005241

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Abstract

The use of $\Pr^{3 +}$ codoping for enhancement of the ${Ho}^{3 +} : {}^{5}{I_{6}} \to {}^{5}{I_{7}}$ mid-IR emissions were investigated in the ${LiLuF}_{4}$ crystal for the first time. It was found that $\Pr^{3 +}$ greatly increased ${Ho}^{3 +}$ 2.9 μm emission by depopulating the ${Ho}^{3 +} : {}^{5}{I_{7}}$ level while having little influence on the ${Ho}^{3 +} : {}^{5}{I_{6}}$ level, leading to greater population inversion. The energy transfer efficiency from ${Ho}^{3 +} : {}^{5}{I_{7}}$ to $\Pr^{3 +} : {}^{3}{F_{2}}$ is calculated to be 88%. Based on Judd–Ofelt theory, the 2.9 μm emission cross section is calculated to be $1.91 \times 10^{- 20} {cm}^{2}$ , and the gain property of the ${Ho}^{3 +} : {}^{5}{I_{6}} \to {}^{5}{I_{7}}$ transition is discussed. We propose that the Ho, ${\Pr : LiLuF}_{4}$ crystal may be a promising material for 2.9 μm laser applications.

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(160.3220) Materials : Ionic crystals
(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:
Materials

History
Original Manuscript: October 29, 2012
Revised Manuscript: November 21, 2012
Manuscript Accepted: November 21, 2012
Published: December 14, 2012

Citation
Peixiong Zhang, Yin Hang, and LianHan Zhang, "Deactivation effects of the lowest excited state of Ho³⁺ at 2.9 μm emission introduced by Pr³⁺ ions in LiLuF₄ crystal," Opt. Lett. 37, 5241-5243 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-24-5241

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| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES