Glasses; Waveguides; Physics, Applied
Third-harmonic generation has been used to measure the magnitude and phase of the nonlinear susceptibility chi-(3) (3-omega) of SiO2-TiO2 sol-gel thin films as a function of TiO2 concentration. Nonlinearities 20 times larger than those of fused silica were found, making such films useful for nonlinear optics in glass waveguides.
Applied Physics Letters
Torruellas, W. E.; Weller-Brophy, L. A.; Zanoni, R.; Stegeman, G. I.; Osborne, Z.; and Zelinski, B. J. J., "3Rd-Harmonic Generation Measurement Of Nonlinearities In Sio2-Tio2 Sol-Gel Films" (1991). Faculty Bibliography 1990s. 354.