Optical pulse collapse in defocusing active medium
Kramer L. , Kuznetsov E. A. , Popp S., Turitsyn S. K.
A phase-gradient mechanism of a pulse compression in the Kerr-lens mode locking laser systems, which can be described by a complex Ginzburg-Landau equation, has been studied. A pulse collapse has been found to occur in a defocusing gain medium, in contrast with the collapse arrest in a focusing active medium. © 1995 American Institute of Physics.