About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Paper
Optical free-induction decay of the F3+ center in NaF
Abstract
We have measured the optical dephasing time T2 of the A11E1 zero-phonon transition of the F3+ color center in NaF by optical free-induction decay. In this way we eliminate the effect of the 54-GHz inhomogeneous broadening, and find a homogeneous linewidth of 20 5 MHz T2=164 nsec). We have also measured a spontaneous emission lifetime of T1=102 nsec. In the range 1.5-4 K, our results are consistent with the relation T2=2T1, indicating that optical dephasing is limited by population-decay processes. This relation was even more clearly demonstrated by performing the same experiment on the D lines of sodium vapor at 3 × 10-5 Torr, where the effects of collisions are negligible. We find that the dephasing is again limited by radiative decay, and that T2(323 nsec)=2T1(16.30.4 nsec). © 1978 The American Physical Society.