Optical properties and spectroscopic parameters of Nd3+-doped phosphate and borate glasses

Neodymium doped berate and phosphate glass specimens have been prepared by the melt quenching technique. Their absorption spectra have been recorded i n the region 300-1000 nm. The Judd-Ofelt theory has been applied to the mea sured values of absorption line strengths to evaluate the spontaneous emiss ion probabilities from the F-4(3/2) level, quantum efficiencies and stimula ted emission cross sections of the F-4(3/2) --> I-4(11/2) transition for Nd 3+. The values of emission cross sections are comparable with those shown b y glasses used in solid state laser applications. (C) 1999 Published by Els evier Science B.V. All rights reserved.