UV–visible upconversion studies of Nd3+ ions in lead tellurite glass

• Published in: Solid state communications Vol. 155; pp. 21 - 24
• Main Authors: Ramakrishna, P.V., Pammi, S.V.N., Samatha, K.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.02.2013; Elsevier
• Subjects: A. Lead tellurite; Amorphous materials, glasses and other disordered solids; C. Absorption spectra; C. Upconversion; Condensed matter: electronic structure, electrical, magnetic, and optical properties; D. Judd–Ofelt analysis; Exact sciences and technology; Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Photoluminescence; Physics; C. Absorption spectra; D. Judd–Ofelt analysis; C. Upconversion; A. Lead tellurite; Impurity density; Doping; Photoluminescence; Judd-Ofelt theory; Frequency conversion; Lead fluoride; Energy-level transitions; Tellurite glass; Neodymium additions; Excitation spectrum; Absorption spectra; Impurity states; D. Judd-Ofelt analysis
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/j.ssc.2012.10.043

In this communication, we have studied the preparation, optical absorption, and visible upconversion characteristics of this ion on excitation with green (532nm) and red (797nm) laser excitation sources in lead tellurite glass samples. Radiative parameters of various transitions/levels were calculated by applying Judd–Ofelt (J–O) theory. Upconversion measurement shows the generation of UV and blue upconversion emissions at 361, 386, 415 and 451nm wavelengths using 532nm excitation. In the same way by using 797nm excitation intense upconversion emissions extended from blue to red regions in Nd3+ doped lead tellurite glass. ► We have studied the preparation and upconversion characteristics in Nd3+ lead tellurite glass. ► Radiative parameters of various transitions were calculated using Judd–Ofelt (J–O) theory. ► Concentration dependent upconversion studies of Nd3+ lead tellurite glass were done.