Abstract
The solid-state ruby nuclear magnetic resonance (NMR) laser shows sequence of instabilities if amplitude or frequency of an external driving signal are swept. With the parametrically modulated NMR laser sequence of period-doubling bifurcations and subsequent transitions to a chotic behaviour were found which are typical of the Feigenbaum scenoario for a route to chaos. In the same system intermittency was observed indicating the presence of the Pomeau-Mannaeville scenario. Chaotic bands were found also along the route to injection-locking where the NMR laser is driven by a stable external oscillator with its frequency slighty detuned from the NMR frequency. Side-products of these investigations of chaotic dynamics are observations with respect to the frequency-pushing of two lasers and the use of a period-doubling laser as small-signal detection.
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