J. Phys. IV France 04 (1994) C4-513-C4-516
Optical properties of Tm3+ in the gehlenite matrix and sensitization of Ho3+ luminescence in potential Tm/Ho lasersN. BRITOS, B. VIANA, A.M. LEJUS and D. VIVIEN
Laboratoire de Chimie Appliquée de l'Etat Solide, ENSCP, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
The Tm:Ho solid state lasers pumpable by laser diodes and emitting around 2.1 µm present interesting applications. In the Ca2Al2SiO7 (CAS) gehlenite host, we have studied the Tm3+ emission, strongly dependent of the doping concentration, the Tm3+-Tm3+ energy transfer leading to the 3F4 → 3H6 broad emission [λmax = 1780 nm, using the [3H4,3H6] →[3F4,3F4] cross-relaxation scheme]. Furthermore, the Tm3+-Ho3+ interactions have also been demonstrated in this study.
© EDP Sciences 1994