Absorption and fluorescence of alexandrite and of titanium in sapphire and glassThe fluorescence and absorption data for titanium in crystalline sapphire and titanium doped into two silicate and one phosphate glass structures are analyzed. It is observed that the Ti-doped silicate glass sample exhibits no absorption related to the Ti(III) ion, the Ti-doped phosphate glass is deep blue, the absorption line width of the glass samples are a factor of two larger than that of sapphire, and the absorption peak for the Ti in the glass shifted about 100 nm to the red from the Ti:sapphire absorption peak. This shift reveals that the Ti(III) ion is sensitive to the crystalline environment and not to the glass environment. The photoluminescence spectra for Ti-doped sapphire and alexandrite are compared. It is detected that the Ti:sapphire exhibits a broader spectrum than that for alexandrite with a peak at 750 nm. The three zero phonon transitions of Ti:Al2O3 at liquid nitrogen temperatures are studied.
Document ID
19860062037
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Byvik, C. E. (NASA Langley Research Center Hampton, VA, United States)
Hess, R. V. (NASA Langley Research Center Hampton, VA, United States)
Buoncristiani, A. M. (Christopher Newport College Newport News, VA, United States)