Control of chaos in an injection multi-quantum well laser via shifting or modulating the injection light. (English) Zbl 1170.78409
Summary: Three methods which can control the chaos in an injection multi-quantum-well (MQW) laser via adjusting or modulating the injection light are presented. Firstly, when a frequency modulator is used to modulate the frequency of the injection light, the chaotic laser can be suppressed in a stable state, a period-one state, a period-doubling state and quasi-periodic states, respectively, where controlled ranges are found in which the laser can emit a stable light wave or regular pulses. Secondly, if the phase of the injection light is modulated by a phase modulator, the chaotic laser can be stabilized in a period-3 state, a period-4 state and other quasi-periodic states, respectively. Lastly, when the injection light is adjusted by an intensity controller, the laser can be conducted to show all kinds of dynamic behaviors.
MSC:
| 78A60 | Lasers, masers, optical bistability, nonlinear optics |
| 81V80 | Quantum optics |
| 37D45 | Strange attractors, chaotic dynamics of systems with hyperbolic behavior |
| 37N20 | Dynamical systems in other branches of physics (quantum mechanics, general relativity, laser physics) |
| 37N35 | Dynamical systems in control |
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