New optical transitions of colour centres in CaF2 : Na+
- 1 January 1984
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 45 (11) , 1779-1787
- https://doi.org/10.1051/jphys:0198400450110177900
Abstract
New colour centres are detected in CaF2 : Na+ by their absorption, emission and excitation optical spectra. The so-called f centre accounts for a fluorescence band peaking at 573 nm, an excitation band at 510 nm and a zero-phonon line at 541.8 nm. The so-called g centre has emission and excitation bands respectively centred at 681 and approximately 562 nm. A number of sharp lines appears in the absorption and fluorescence spectra, some of which are zero-phonon lines of known centres, or their vibrational satellites, while others are still unidentifiedKeywords
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