H. Niciu, I. C. Vasiliu, A. Manea, D. Radu, M. Secu, C. Onose , L. Ghervase, D. Niciu, I. D. Feraru, C. E. A. Grigorescu, Investigations of the neodymium doped quartz glasses obtained by the hybrid sot-gel method, Optoelectron. Adv. Mater. – Rapid Comm., 4/10 (2010) 1620-1623.

Title: Investigations of the neodymium doped quartz glasses obtained by the hybrid sot-gel method

Abstract: Undoped and neodymium doped quartz glasses were obtained by the hybrid sol-gel method. The vitrification was performed in He atmosphere. The Nd(3+) characteristic absorption bands in the UV and VIS were put into evidence. Investigations in the NIR range revealed a small amount (86 ppm) of OH(-) in the vitreous matrix. FTIR and Raman spectra exhibit the SiO(2) glass characteristic vibrations and also the characteristic vibrations of Si-OH and Si-Cl bonds. The photoluminescence peaks at 640, 920 and 1080 nm belonging to the Nd(3+) doped quartz glass were evidenced.

Key words: Nd:Silica glass; Hybrid sol-gel method; Photoluminescence