Such interactions were monitored in the time domain by performing modified echo experiments. The constructive or destructive interference that was characteristic of the Autler-Townes components in electron spin triplet states was observed for 2 different color centers, in CaO and diamond crystals, respectively.

M.Glasbeek, C.J.M.Tavares, M.A.C.Neto, R.Sitters: Radiation Effects and Defects in Solids, 1995, 134[1-4], 453-5