Abstract
Temporal oscillations and cascade of period doublings in the oscillatory scattered light were observed as a function of time, when CsNCS crystals were kept stable near the structural phase transition (SPT) temperatures and irradiated by focussed beams of constant laser powers. From the striking similarities between the observed phenomena and period doubling bifurcations, different oscillatory regions in CsNCS crystal have been related to successive instabilities, as some internal parameter of the system changes with time in a self-controlled manner. Considering thermal and photoinduced changes as the major sources probable nonlinear interaction mechanisms for the observed phenomena have been proposed.
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