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Growth, structural and spectroscopic properties of Yb3+-doped Li0.75Gd0.75Ba0.5(MoO4)2 crystals

✍ Scribed by A. García-Cortés; C. Cascales; C. Zaldo

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
584 KB
Volume
146
Category
Article
ISSN
0921-5107

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✦ Synopsis

Yb-doped Li 0.75 Gd 0.75 Ba 0.5 (MoO 4 ) 2 crystals were grown in air by the Top Seeded Solution Growth slow cooling method in a Li 2 Mo 2 O 7 flux. The single crystal X-ray diffraction analysis indicates the symmetry of monoclinic space group C2/c (No. 15), with lattice parameters a = 5.2355(3) Å, b = 12.7396(8) Å, c = 19.1626(11) Å, β = 91.170(1) • , V = 1277.84(13) Å3 , and Z = 8, with one 8f site shared (0.725:0.06:0.215) by Gd 3+ , Yb 3+ and Li + ions, respectively. The optical absorption and photoluminescence properties are described consistently with the anisotropic character of the monoclinic phase. The relative energies of the Yb 3+ Stark levels have been determined, and in order to make a preliminary evaluation of its laser properties, values of the 300 K absorption and emission cross-sections have been derived.

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