Peculiarities of multiple-pulse photon-echo generation in optically dense media

Some general nonlinear peculiarities of photon-echo radiation in optically dense media

Multipulse generation of stimulated photon echo signals in optically dense media

Non-collinear excitation of photon echo in optically dense media

Multiple photon echo in an optically dense medium

Three-pulse photon echo peak shift in optically dense samples

Three-Pulse Photon Echo in a Dense Potassium Vapor