It is shown that the unstable steady state of a multimode laser system may be stabilized by the occasional proportional feedback technique for dynamical control of chaotic systems. The range of pump excitations over which stabilization can be maintained is extended by more than an order of magnitude through application of a procedure for tracking the unstable steady state as the pump excitation is slowly varied.

• Received 23 July 1992

DOI:https://doi.org/10.1103/PhysRevLett.69.3169