Semiconductor Lasers: Stability, Instability and Chaos
نویسنده
چکیده
Lasers are essentially chaotic system. However, semiconductor lasers are classified into stable class B lasers. Meanwhile, they are easily destabilized by external perturbations (introduction of extra degree of freedom). We discuss chaos in lasers and also instability and chaos in semiconductor lasers. Recently, new semiconductor lasers with extra device structures have been developed and they are essentially unstable lasers without any external perturbations. We also present instabilities in new lasers and the method to control them. Applications of chaotic semiconductor lasers are attractive issues. Here, as an example, we discuss secure communications in chaotic semiconductor lasers. Keywords; semiconductor lasers, instability, chaos, control of chaos, chaos communications
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