Self-focusing and defocusing of the self-similar π-pulses in the gain media

摘要

The results of the influence of the transversal perturbations on the self-similar ultra short pulse, propagating in the inversed (gain) media are studied. The two possible modes are found: self-focusing and blowup defocusing with the forming the one-dimension pulse. The mode is determined by the value of the parameter μ, that defines the attitude of characteristic lengths of diffraction and dispersion.