Abstract

The luminescing S₁ centre in diamond has some characteristic features, eg, its lifetime in the milisecond region and two zero-phonon lines 34 meV apart with temperature dependent intensities and different vibronic structure. Although some preliminary studies on it have been carried out (1) a detailed study of this interesting centre has not yet been reported. We found this centre present in the wide class of the so called brown diamonds whose characteristic centres began to be studied recently (2, 3) and studied it under steady state conditions and by time resolved spectroscopy.

© 1984 Optical Society of America