Spectroscopy and optical characterization of thulium doped TZN glasses
Résumé
This paper reports spectroscopic properties of the 3 H 4 and 3 F 4 Tm 3+ levels in TZN glass host with a concentration range from 0.82 to 22 10 20 cm -3. Precise refractive index measurements are performed on five different wavelengths by the prism coupling method. Judd – Ofelt intensity parameters have been determined in order to obtain transition rate, branching ratio, and radiative lifetime. Spectroscopy measurements showed the most promising concentration for 1.8 µm short cavity laser emission at 6.84 10 20 cm -3 Tm 3+ with a 24% quantum efficiency 2 and upper limit concentration of 11 10 20 cm -3 Tm 3+. Energy transfer microparameters and critical ion distance are determined for both emission levels in the framework of diffusion – limited regime and dipole – dipole interaction.
Fichier principal
PEER_stage2_10.1088%2F0022-3727%2F43%2F13%2F135104.pdf (386.74 Ko)
Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...