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mokhtarnejad M, Tajali H, Roshan entezar S. Using optical pulse pump to Control band gap of photonic crystals containing InGaAs/GaAs semiconductor quantum wells . ICOP & ICPET _ INPC _ ICOFS 2014; 20 :1525-1528
URL: http://opsi.ir/article-1-112-en.html
URL: http://opsi.ir/article-1-112-en.html
Abstract: (37992 Views)
In this paper, the effect of incident angle on reflectivity and the active band gap of a one-dimensional resonant photonic crystal containing InGaAs/GaAs semiconductor quantum wells is discussed. The photonic crystal is excited by a strong external femtosecond pump pulse with a frequency close to the exciton resonance frequency. The results show that owing to the optical Stark effect and control of the exciton resonance frequency, the crystal band gap can be controlled. This band gap that is controlled by the Stark effect, can be useful to design optical switches and filters. Due to the small size of the introduced structure, it has the capacity to utilize in the optical integrated circuits and optical telecommunication systems.
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