Dehydroxylation processing and lasing properties of a Nd alumino-phosphate glass

In this work, we have studied the preparation and properties of an alumino-phosphate glass with composition 13Na2O-13K2O-16BaO-4Al2O3-54P2O5 (mol%). The first part work deals study processing conditions dehydroxylation phosphate glass, which was performed by remelting under N2 flow using graphite crucibles. Glass samples from 5 to 50 g Nd2O3 doped were submitted influence temperature, time, mass viscosity correlated content water in glasses through coefficient absorption OH ions. network structure also determined means 31P 27Al 1D/2D nuclear magnetic resonance local environment Nd3+ ions probed electron paramagnetic resonance. optimized then used obtain a dehydroxylated 2.5 wt% whose spectroscopic laser emission studied. include, Judd-Ofelt calculation, stimulated cross-section transition, lifetime, quantum efficiency are presented. Site-selective spectroscopy obtained selective wavelength pumping along 4I9/2→4F5/2 band determine distribution crystal field rare earth is located, together its pump dependence spontaneous emissions matrix.