Nb. Abraham et al., STRUCTURAL SIMILARITIES AND DIFFERENCES AMONG ATTRACTORS AND THEIR INTENSITY MAPS IN THE LASER-LORENZ MODEL, Optics communications, 117(3-4), 1995, pp. 367-384
Numerical studies of the laser-lorenz model using parameters reasonabl
y accessible for recent experiments with a single mode homogeneously b
roadened laser demonstrate that the form of the return map of successi
ve peak values of the intensity changes from a sharply cusped map in r
esonance to a map with a smoothly rounded maximum as the laser is detu
ned into the period doubling regime. This transformation appears to be
related to the disappearance (with detuning) of the heteroclinic stru
ctural basis for the stable manifold which exists in resonance. This i
s in contrast to the evidence reported by Tang and Weiss (Phys. Rev. A
49 (1994) 1296) of a cusped map for both the period doubling chaos fo
und with detuning and the spiral chaos found in resonance for seemingl
y Lorenz-like behavior of the far-infrared ammonia laser from which it
was concluded that them existed a ''unique chaotic attractor for a si
ngle-mode laser''.