Optical absorption spectra of Pr(III), Nd(III), Er(III) and Tm(III) ions in potassium sodium phosphate glass

• Published in: The Journal of physics and chemistry of solids Vol. 49; no. 2; pp. 133 - 138
• Main Authors: Lakshman, S.V.J., Kumar, A.Suresh
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 1988; Elsevier
• Subjects: branching ratios; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Judd-Ofelt intensity parameters; lifetimes; Optical absorption spectra; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Physics; rare earth binary glasses; Optical absorption spectra; rare earth binary glasses; lifetimes; Judd-Ofelt intensity parameters; branching ratios; Phosphates; Lanthanide; Impurity; Visible absorption; Refraction index; Glass; Infrared absorption; Impurity level; Ultraviolet absorption; Amorphous state; Experimental study; Judd Ofelt effect; Branching ratio; Lifetime; Level splitting; Optical absorption
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/0022-3697(88)90042-X

Absorption spectra of Pr 3+, Nd 3+ and Tm 3+ ions in Potassium Sodium Phosphate (PPSP) glass were recorded in the UV-Visible and NIR regions. Various Spectroscopic parameters were evaluated. The Judd-Ofelt intensity parameters were determined from the observed intensities of the absorption bands. Radiative lifetimes (τ R) and branching ratios (β) were evaluated for the fluorescent levels. The splittings observed in the second derivative spectra of certain bands are satisfactorily explained as due to the resolution of the electronic levels of Nd 3+ ion in the neodymium doped glass and the superposition of the vibrational modes of the PO 3− 4 radical on the electronic levels of the Tm 3+ ion in the thulium doped glass.