Time-resolved Photo-Phonon Spectroscopy of Exchange Coupled $C{r}^{3+}$ - Pairs in Ruby

A. M. Shegeda, V. N. Lisin

A rather simple method is used to detect at once both optical absorption spectra and excited-states nonradiative transitions in 0,03 at ${%}$ and 0,16 at ${%}$ ruby at temperature…