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Schematic diagram of the experimental setup, where PD is the photodiode, PM is the potentio-meter, and LD is the laser diode.
Temporal behaviors of the laser and variable of the Rössler outputs [see Eq. (1)]; (a) and (b) are the laser intensity and the electronic Rössler oscillator output, respectively. The irregularly fluctuating signals are chaotic outputs when the feedback is turned off and the dark black flat signals are the stabilized signals of both systems obtained owing to oscillation quenching when .
Bifurcation diagrams of (a) the Nd YAG laser output taken with ac coupling and (b) variable of the Rössler oscillator taken with dc coupling depending on the coupling strength. Here the peak value at each period of the two outputs is taken. PS implies phase synchronization, LC is the limit cycle, and OQ is the oscillation quenching.
Bifurcation diagrams and the Lyapunov exponent spectrum for . (a) the variable of the Rössler, (b) the variable of the Lorenz oscillator, and (c) is the total Lyapunov spectrum depending on the coupling strength.
Phase diagram of the quenching and phase synchronization region in the space of coupling strength and laser pumping power.
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