Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7907626 | Optical Materials | 2018 | 7 Pages |
Abstract
The spectroscopic properties of Tb3+ ions in monoclinic KLu(WO4)2 double tungstate crystal are studied with polarized light. The absorption spectra in the visible, near- and mid-IR including the transitions to all lower-lying 7FJ (Jâ¯=â¯0 ⦠5) excited states are measured. The maximum absorption cross-section for the 7F6â¯ââ¯5D4 transition is 3.42â¯Ãâ¯10â21â¯cm2â¯at 486.7â¯nm for light polarization E || Nm. The transition probabilities for Tb3+ ions are calculated within the Judd-Ofelt theory modified for the case of an intermediate configuration interaction (ICI). The radiative lifetime of the 5D4 state is 450 μs and the luminescence quantum yield is >90%. The polarized stimulated-emission cross-section spectra for all 5D4â¯ââ¯7FJ (Jâ¯=â¯0 ⦠6) emission channels are evaluated. The maximum ÏSE is 11.4â¯Ãâ¯10â21â¯cm2â¯at 549.4â¯nm (for E || Nm). Tb3+:KLu(WO4)2 features high transition cross-sections for polarized light being promising for color-tunable visible lasers and imaging.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Pavel Loiko, Anna Volokitina, Xavier Mateos, Elena Dunina, Alexey Kornienko, Elena Vilejshikova, Magdalena Aguiló, Francesc DÃaz,