Spectroscopic properties of newly flux grown and highly Yb3+-doped cubic RE2O3 (RE=Y, Gd, Lu) laser crystals

Matias Velázquez (1) , Philippe Veber (1) , Gabriel Buşe (1) , Yannick Petit (1) , Philippe Goldner (2, 3) , Veronique Jubera (1) , Daniel Rytz (4) , Anaël Jaffres (2, 3) , Mark Peltz (4) , Volker Wesemann (2, 3) , Patrick Aschehough (2, 3) , Gérard Aka (2, 3)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 IRCP - Institut de Recherche de Chimie Paris
3 PSL - Université Paris Sciences et Lettres
4 FEE Gmbh

We have developed laser grade and highly Yb3+-doped cubic rare-earth sesquioxides (RE2O3, RE = Y, Gd, Lu) single crystals by means of a newly designed high-temperature solution growth method which gives them spectroscopic properties different from those obtained by high-temperature solidification methods. Absorption and emission cross sections, visible anti-Stokes emission, fluorescence decays of the new cubic Gd2O3:Yb3+ single crystals are presented and compared to those of Y2O3:Yb3+ and Lu2O3:Yb3+ crystals. The case of cubic Gd2O3:Yb3+ is particularly interesting since its basic spectroscopic properties have never been detailed and we were capable of achieving Yb-doping level as high as 20%.

Mots clés: Yb3+ ion spectroscopy; Flux crystal growth; Rare-earth sesquioxides; Laser crystals

Domaines: Matériaux

Matias Velázquez, Philippe Veber, Gabriel Buşe, Yannick Petit, Philippe Goldner, et al.. Spectroscopic properties of newly flux grown and highly Yb3+-doped cubic RE2O3 (RE=Y, Gd, Lu) laser crystals. Optical Materials, 2015, 39, pp.258-264. ⟨10.1016/j.optmat.2014.11.037⟩. ⟨hal-01108927⟩