Reversed light echo in a ruby
Zuikov V.A. , Samartsev V.V. , Usmanov R.G,
The reversed light echo produced as a result of a two-pulse, laser resonance excitation of a ruby crystal under conditions when the first pulse is a traveling wave and the second one is a standing wave was investigated. The transverse, irreversible relaxation time was determined from the intensity decay curve of this signal.