On the origin of bichromatic laser emission in Nd3+-doped fluoride glasses.
In this work we present a detailed study about the influence of the host matrix in the spectroscopic and laser properties of Nd3+ in three different fluoride glasses. Site-selective time-resolved techniques have been used to investigate the crystal field changes felt by the Nd3+ ion as a consequence of glass inhomogeneity. Stimulated emission experiments performed under selective wavelength laser pumping show the existence of bichromatic emission from two distinguishable site distributions for Nd3+ in fluoride glasses. This result can be explained by the moderate inter-site energy transfer among Nd3+ ions found in these systems.
Azkargorta
J
J
Departamento de Fisica Aplicada I, Escuela Superior de Ingenieros, Alda. Urquijo s/n 48013 Bilbao, Spain.
Iparraguirre
I
I
Balda
R
R
Fernández
J
J
D003198:Computer Simulation; D005459:Fluorides / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007834:Lasers; D008956:Models, Chemical; D009354:Neodymium / Q000737:chemistry*
D009354:Neodymium; D005459:Fluorides