Rare-earth doped yttrium aluminum garnet (YAG) is among the most widely produced transparent ceramics, mainly for laser applications. This work reports on the preparation of single-doped YAG transparent ceramics with up to 20 at. % of Yb and YAG ceramics co-doped with other rare earth elements (Nd, Er). With one of the ions acting as a sensitizer, the co-doping leads to the enhancement of absorption of the material, and thus to the increase of energy transfer [1,2]. YAG ceramics doped with Yb, (Yb, Er) and (Yb, Nd) were prepared from oxide powders via solid state sintering in high vacuum with TEOS as a sintering aid [3]. Analyses of the sintered samples were carried out to determine the influence of dopants on the sintering, on the final microstructure and properties of these materials. Special attention was paid to the optical properties. [1]V. Lupei, A. Lupei, C. Gheorghe and A. Ikesue, J. Appl. Phys. 108, 123112 (2010). [2]J. Zhou, W. Zhang, T. Huang, L. Wang, J. Li, et al, Ceram. Int. 37, 513-515 (2011). [3]L. Esposito, A. Piancastelli, A. L. Costa, M. Serantoni, G. Toci and M. Vannini, Opt. Mater. 33, 713-721 (2011).
Transparent YAG ceramics with single Yb and mixed Yb, Er and Yb, Nd doping
Jan Hostasa;Laura Esposito;Andreana Piancastelli
2012
Abstract
Rare-earth doped yttrium aluminum garnet (YAG) is among the most widely produced transparent ceramics, mainly for laser applications. This work reports on the preparation of single-doped YAG transparent ceramics with up to 20 at. % of Yb and YAG ceramics co-doped with other rare earth elements (Nd, Er). With one of the ions acting as a sensitizer, the co-doping leads to the enhancement of absorption of the material, and thus to the increase of energy transfer [1,2]. YAG ceramics doped with Yb, (Yb, Er) and (Yb, Nd) were prepared from oxide powders via solid state sintering in high vacuum with TEOS as a sintering aid [3]. Analyses of the sintered samples were carried out to determine the influence of dopants on the sintering, on the final microstructure and properties of these materials. Special attention was paid to the optical properties. [1]V. Lupei, A. Lupei, C. Gheorghe and A. Ikesue, J. Appl. Phys. 108, 123112 (2010). [2]J. Zhou, W. Zhang, T. Huang, L. Wang, J. Li, et al, Ceram. Int. 37, 513-515 (2011). [3]L. Esposito, A. Piancastelli, A. L. Costa, M. Serantoni, G. Toci and M. Vannini, Opt. Mater. 33, 713-721 (2011).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
