Praseodymium Ion Doped Sodium Borosilicate Glasses: Energy Interaction and Radiative Properties
Year: 2015
Type: article
Abstract: Sodium borosilicate glasses of the final composition (in wt.%) 68.94 SiO2 -22.55 Na2O- 1.91 CaO -4.96 K2O - 0.85 B2O3 -0.29 As2O3- x Pr6O11 (where x = 0.1,0.3and 0.5) have been prepared by melt quenching technique. The absorption and fluorescence spectra have been recorded at room temperature. Energy interaction parameters i.e. Slater-Condon, Racah, Nephelauxetic ratio (β') and bonding parameters (b 1/2 ) have been computed from observed energy band to study the nature of bonding in doped glasses. The intensities of the 4f↔4f transitions in the absorption spectra have been analyzed by the Judd-Ofelt theory. Using the fluorescence data and JO parameters, various radiative properties for different emission lines have been computed. The values of A, β and σP for 3 Po → 3 H4 and 3 Po→ 3 F2 transition are maximum, suggesting that they can be used as a most probable laser transitions. The values of σp for the transition 3 Po→ 3 F2 is high due to the presence of As2O3 in glass.
Authors: Y. Sharma, Rajesh Kumar Singh, Sudha Pal
Language: English
Subfield: Ceramics and Composites
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W28564984