CALCULATION OF STIMULATED PHOTON ECHO IN THREE-LEVEL AND DEGENERATE SYSTEMS IN THE PRESENCE OF INHOMOGENEOUS EXTERNAL ELECTRIC FIELDS
A frequency and temporal correlation of inhomogeneous broadening and its effect on the response intensity have been investigated for a stimulated photon echo in three-level and degenerate systems in the presence of external non-uniform electric fields. The frequency and temporal correlation coefficient for frequency shifts within different time intervals and the response intensity of the stimulated photon echo were shown to depend both on the Stark constants for different resonance transitions and on gradients of the external inhomogeneous electric field. A possibility was investigated to control an instant of the stimulated photon echo response in the range of nanoseconds.