Switching On/Off of Cavity Solitons in Semiconductor Microresonators via Carrier Injection above Laser Threshold

Switching On/Off of Cavity Solitons in Semiconductor Microresonators via Carrier Injection above Laser Threshold

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Part of #Switching On/Off of Cavity Solitons in Semiconductor Microresonators via Carrier Injection above Laser Threshold# :

Publishing year : 2011

Conference : Second National Conference on Iranian Optical and Laser Engineering

Number of pages : 5

Abstract: We studied the Cavity Solitons (CSs) and their switching in a semiconductor Fabry-perot type microresonator where the active medium is GaAlAs / GaAsmultiple quantum well nano-structures. We use the full set of Maxwell-Bloch equations to describe the dynamical behavior of the system, since the two-level system's rate equation model fails to explain the system when considering the femto-second time scales. Numerical simulations imply the formation of stable CSs, which is done by local carrier injection as the switching method. To switch these CSs we used the same method but with a negative amplitude of the injection function. It is also realized that the successive switching on / off of CSs by such a scheme is possible in this system. Switching by this method has some advantages over the coherent switching, either in the switching on or in the switching off process.