The optical nonlinearity and structure for a PbO, TiO2, SiO2, and K2O quaternary glass system
- 15 April 1994
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 75 (8) , 3756-3760
- https://doi.org/10.1063/1.356048
Abstract
The nonlinear refractive index n2 of a PbO, TiO2, SiO2, and K2O quaternary glass system measured by the laser beam longitudinal scanning (Z-SCAN) method was found to be 7.72×10−19 m2/W and it was strongly correlated with the presence of more polarizable ions rather than the nonbridging oxygen content. The structural units of the present glass system has been studied by infrared (IR), Raman spectra, and x-ray photoelectron spectroscopy (XPS) techniques. The results indicate that the IR absorption band at 1020 cm−1 and the Raman peak at 1100 cm−1 attributed to the stretching vibration of the Si—O—Si bond shift to a lower wave number with an increase of the relative content of K2O. The XPS O1s spectra are decomposed into two main components, which reveal that oxygen atoms of the glass network occur in both bridging and nonbridging oxygen with binding energies of 531.77±0.30 eV and 530.17±0.40 eV, respectively. Si4+ ions are in the form of SiO4 to form the glass network, Ti4+ ions are dual 4- and 6-coordinated with oxygen ions, K+ ions act as network modifiers, and Pb2+ as network modifiers at a low content of PbO, but are network formers at high content. A structural model has been proposed.This publication has 12 references indexed in Scilit:
- Structure of PbOBi2O3Ga2O3 glassesJournal of Non-Crystalline Solids, 1991
- Structure of binary K2OTiO2 and Cs2OTiO2 glassesJournal of Non-Crystalline Solids, 1989
- High-sensitivity, single-beam n_2 measurementsOptics Letters, 1989
- Glasses as Nonlinear Photonic MaterialsJournal of the American Ceramic Society, 1989
- Nonlinear refractive index of optical crystalsPhysical Review B, 1989
- Fabrication of thin film nonlinear optical glasses using pulsed excimer laser depositionApplied Optics, 1989
- Nonlinear optical glasses for ultrafast optical switchesIEEE Journal of Quantum Electronics, 1987
- Infrared spectra of vitreous silica and sodium silicates containing titaniumJournal of Non-Crystalline Solids, 1986
- Acousto-Optic Tunable FiltersOptical Engineering, 1981
- Raman scattering measurements of silicate glasses and compoundsJournal of Non-Crystalline Solids, 1976