Solitons of nontruncated Maxwell-Bloch equations

The results of the theoretical study and computer simulations on the ultrashort pulse propagation in a medium of the two-level atoms are discussed. We find the solution of the nontruncated Maxwell-Bloch equations corresponding to the selfsimilar pulse propagation. It is shown that these pulses are solitons. We discuss the dependency of the solitary pulse parameters on the incident pulse amplitude, frequency and temporal width.