A large deplition of the copper ground state is found in CVL, following the excitation pulse. The recovery time of this level is longer than the pulse seperation in a self-heated CVL, and must influence its prf properties. It is suggested that the missing atomes are iorized.
"Ground State Depletion In CVL", Proc. SPIE 1041, Metal Vapor Laser Technology and Applications, (1 June 1989); doi: 10.1117/12.951225; https://doi.org/10.1117/12.951225