Abstract
We report the relationship between the initial glass composition and the resulting microstructural changes after direct femtosecond laser waveguide writing with a 1 kHz repetition rate Ti:sapphire laser system. A zinc polyphosphate glass composition with an oxygen to phosphorus ratio of 3.25 has demonstrated positive refractive index changes induced inside the focal volume of a focusing microscope objective for laser pulse energies that can achieve intensities above the modification threshold. The permanent photo-induced changes can be used for direct fabrication of optical waveguides using single scan writing techniques. Changes to the localized glass network structure that produce positive changes in the refractive index of zinc phosphate glasses upon femtosecond laser irradiation have been studied using scanning confocal micro-Raman and fluorescence spectroscopy. © 2011 Optical Society of America.
Recommended Citation
L. B. Fletcher et al., "Direct Femtosecond Laser Waveguide Writing Inside Zinc Phosphate Glass," Optics Express, Optical Society of America, Jan 2011.
The definitive version is available at https://doi.org/10.1364/OE.19.007929
Department(s)
Materials Science and Engineering
International Standard Serial Number (ISSN)
1094-4087
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2011 Optical Society of America, All rights reserved.
Publication Date
01 Jan 2011
