Abstract

We outline the results of an analysis of fluorescence line narrowing¹ in dilute systems. We assume that a fraction, p, of the sites on a d-dimensional lattice are occupied at random by optically active ions and that the transfer of optical excitation can only take place between ions occupying nearest-neighbor sites. The normalized intensity of the sharp line fluorescence following excitation of an inhomogeneously broadened line by a monochromatic source is equal to exp [−γ_Rt]<P(t)>, where γ_R is the radiative decay rate and <P(t)> is the probability that an ion excited at t=0 is also excited at time t.²

© 1984 Optical Society of America