Photon-echo behavior in the presence of extreme inhomogeneous broadening

Analysis of photon-echo behavior using single-mode excitation is given. It is shown that in the presence of extreme inhomogeneous broadening, the excitation with long pulses may display a complicated echo shape. Two typical cases are treated, one in which the pulses have equal length, and the other in which the pulses have equal electric-field strength. These show a large difference in echo behavior, especially for large excitation pulse areas.