Abstract
We report on the excited state fluorescence and absorption characteristics of chromium-doped gahnite glass ceramic. The material is characterized by a very structured and wide emission spectrum despite its lowest excited state being the doublet 2E g, usually associated with very weak electron–phonon coupling. Excited state absorption is principally from the doublet 2E g to three higher-energy doublets though an additional contribution due to the gahnite glass ceramic host is also present during UV excitation. The chromium excited state absorption has been extracted from the overall spectrum. Utilizing data from the emission, absorption and excitation spectra, the configuration coordinate diagram describing octahedrally coordinated Cr 3+ ions in the gahnite glass ceramic has been produced. From this diagram the expected excited state absorption spectrum, including the influence of bleaching, has been modelled and a comparison made with experimental data.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
