The paper investigates a model of a solid-state laser with optoelectronic feedback, which controls the Q-factor of the resonator. It is shown that, with an increase in the feedback response delay time, the transition of laser generation to dynamic chaos is initially observed. Then, with an even longer delay time, rare high-intensity laser pulses appear, called rogue waves. In addition, it was shown that it is possible to deliberately excite such rogue waves using a short-term external action on the system.
The work investigates the space-time dynamics of semiconductor broad-area lasers with injection of external optical radiation and taking into account the broadening factor of the laser spectral line (alpha factor). It is shown that a nonzero alpha factor leads to modulation transverse instability, which leads to filamentation of laser radiation. It is shown that the injection of external optical radiation suppresses modulation instability and makes it possible to achieve stable spatially uniform paraxial lasing.
In this paper, spatiotemporal dynamics of broad-area lasers with external optical injection is investigated. We demonstrate theoretically that relatively small optical injection suppresses unstable transverse modes and stabilizes laser output. We perform our study, taking into account the detuning between the frequency of the injected and generated radiation. The frequency detuning does not destroy the stabilizing effect. Parameters of the injected signal, at which effective suppression of transverse instabilities occurs, are found.
This paper investigates nontrivial temporal dynamics of the optical field in the nonlinear ring resonator (containing the metamaterial with the cubic nonlinearity of the Kerr type) driven by an external optical injection and subjected to a delayed feedback. Unstable periodic orbits are obtained for definite sets of parameters including the delay time, feedback strength, feedback phase, amplitude of injection field and detuning. The bifurcation diagram of nonlinear behavior of this optical system is constructed.
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