A microwave-pumped spin-wave-instability experiment is used to demonstrate that chaos can be controlled by a small periodic perturbation of an available system parameter, as recently proposed by Ott, Grebogi, and Yorke. The experiment is performed in an yttrium-iron-garnet sphere in the subsidiary-resonance configuration with a small modulation in the applied magnetic field. Observation of the Fourier spectrum of the low-frequency auto-oscillations and measurment of the attractor dimension and metric entropy demonstrate clearly that the chaotic attractor becomes periodic when the modulation frequency and amplitude are carefully chosen.
No takes yet. Share an insight, caveat, or question.
S. M. Rezende (1991) studied this question.