Investigations of new materials possessing both higher Raman gain and larger spectral bandwidth than fused silica are becoming mandatory in order to satisfy increasing telecommunications demands. Herein, silica–niobia based glasses have been prepared and characterized by ellipsometry and Raman spectroscopy. A fine glass structural characterization of bulk system has been performed and the Raman gain has been quantified. Our silica-based glass system (K2O–Nb2O5–SiO2 (KNS)) provides via thermal treatment a nanocomposite material of easy and cheap fabrication. In our glass composition a strong Raman gain (up to 30 times higher than fused silica) and a large bandwidth have been measured and demonstrated to be related to nanostructured material domains
Compositional and themal effects on Raman gain and bandwidth of nanostructured niobiasilicate glasses / L., Sirleto; M., Goiffré; Aronne, Antonio; Fanelli, Esther; Pernice, Pasquale; G., Righini; Vergara, Alessandro. - In: OPTICAL MATERIALS. - ISSN 0925-3467. - 36:2(2013), pp. 408-413. [10.1016/j.optmat.2013.10.001]
Compositional and themal effects on Raman gain and bandwidth of nanostructured niobiasilicate glasses
ARONNE, ANTONIO;FANELLI, Esther;PERNICE, PASQUALE;VERGARA, ALESSANDRO
2013
Abstract
Investigations of new materials possessing both higher Raman gain and larger spectral bandwidth than fused silica are becoming mandatory in order to satisfy increasing telecommunications demands. Herein, silica–niobia based glasses have been prepared and characterized by ellipsometry and Raman spectroscopy. A fine glass structural characterization of bulk system has been performed and the Raman gain has been quantified. Our silica-based glass system (K2O–Nb2O5–SiO2 (KNS)) provides via thermal treatment a nanocomposite material of easy and cheap fabrication. In our glass composition a strong Raman gain (up to 30 times higher than fused silica) and a large bandwidth have been measured and demonstrated to be related to nanostructured material domainsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
