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Judd–Ofelt analysis of spectroscopic properties of Tm3+, Ho3+ doped GdVO4 crystals

✍ Scribed by Yanmin Yang; Baoquan Yao; Baojiu Chen; Cheng Wang; Guozhong Ren; Xiaojun Wang

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
200 KB
Volume
29
Category
Article
ISSN
0925-3467

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✦ Synopsis

Tm 3+ : GdVO 4 and Ho 3+ : GdVO 4 crystals with good optical quality were grown by Czochralski technique. Polarized absorption and unpolarized fluorescence spectra of Tm 3+ and Ho 3+ in GdVO 4 crystals were measured. The Judd-Ofelt (JO) model was applied to obtain the three phenomenological intensity parameters. For Tm 3+ , X 2 = 8.16 • 10 À20 , X 4 = 2.45 • 10 À20 , X 6 = 0.98 • 10 À20 (with dimension of cm 2 ). For Ho 3+ X 2 = 1.51 • 10 À20 , X 4 = 1.61 • 10 À20 , X 6 = 1.22 • 10 À20 (with dimension of cm 2 ). The radiative probabilities, radiative lifetimes, and branch ratios of Tm 3+ and Ho 3+ in GdVO 4 crystals were then determined. Using the reciprocity method and Fuchtbauer-Ladenberg formula, the stimulated emission cross-sections for some interested transitions, such as (

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