Echo-spectroscopy of dense Yb vapors

摘要

The near dipole-dipole interatomic interaction effect on transients in dense Yb vapors is considered. The influence of excitation-induced-dephasing as well as the frequency shift on signals of nonstationary nutation, free polarization decay and photon echo are taken into account. The conditions of intrinsic optical Instability occurrence in dense resonant media are discussed. The local field is shown to result in multiple single-pulse echo signals. Besides, in such media one can observe a lot of primary photon echo responses under various phase-matching conditions.