The sol-gel technique allows preparation of pure inorganic glasses or composite
glasses of inorganic and organic nature at low temperature. Incorporation of organic
molecules with desired spectral characteristics is the subject of our research.
Specific cases include preparation of stable tunable lasers in the visible based on
photostable dyes; glasses doped with dyes characterized by double-proton transfer
with good separation between absorption and emission; new materials having nonlinear
properties; and glasses with dyes sensitive to ambient acidity and basicity. Four
types of these glasses are discussed.
"Theory and application of spectroscopically active glasses prepared by the sol-gel method", Proc. SPIE 1328, Sol-Gel Optics, (1 November 1990); doi: 10.1117/12.22543; https://doi.org/10.1117/12.22543