COMPOSITIONAL DEPENDENCE OF OPTICAL-PROPERTIES OF ND3+ IN GALLATE GLASSES

The Judd-Ofelt parameters, spontaneous emission probabilities from the F-4(3/2) level, quantum efficiency, and stimulated emission cross sec tion of the F-4(3/2)-->I-4(11/2) transition for Nd3+ are studied for p otassium tantalum and lead bismuth gallate glasses. The results reveal that the tantalum gallate glasses have high Omega(2) values being com parable to that of Ge-Ga-S glass. The lead bismuth gallate glasses hav e high stimulated emission cross sections over 4 pm(2) because of thei r high refractive indexes. The variations of the JO parameters with co mposition are discussed in terms of glass structure.