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Abstract:
A Dy3+:Na2La4(WO4)7 crystal was grown successfully by the Czochraski method, its spectroscopic properties were investigated in detail. The radiative transition probabilities, fluorescence branching ratios, and radiative lifetime of Dy3+ ions were obtained based on the Judd-Ofelt theory. The absorption cross sections at 454 nm are 1.1 × 10−21 cm2 and 0.75 × 10−21 cm2 for σ-polarization and π-polarization, respectively. The stimulated emission cross sections at 574 nm is 1.64 × 10−20 cm2 for π-polarization, and 1.79 × 10−20 cm2 for σ-polarization. The fluorescence lifetime of the 4F9/2 energy level is 218 µs. The results show that Dy3+:Na2La4(WO4)7 crystal is very suitable for commercial 450 nm blue laser diodes pumping, and is a promising yellow laser material. © 2020 Elsevier B.V.
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Journal of Crystal Growth
ISSN: 0022-0248
Year: 2020
Volume: 536
1 . 7 9 7
JCR@2020
1 . 7 0 0
JCR@2023
ESI HC Threshold:160
JCR Journal Grade:3
CAS Journal Grade:4
Cited Count:
SCOPUS Cited Count: 4
ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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