Abstract

In recent years, extensive spectroscopic studies concerning F-type point defects in additively colored alkaline earth oxides have been reported. In particular, oxygen vacancies containing two electrons are of interest because they can be photo-excited into phosphorescent triplet states. Several experimental techniques have been applied for studying such triplet states including optical-microwave double resonance and spin coherence techniques [1]. In this paper, we report on a spin coherence study of the phosphorescent triplet state of the ${\text{F}}_2^{2+}$ center in CaO, the triplet state being prepared by excitation with cw- and pulsed-dye laser light.

© 1984 Optical Society of America