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Ultrafast gain dynamics in asymmetrical multiple quantum-well semiconductor optical amplifiers

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5 Author(s)
Lysak, V.V. ; Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., South Korea ; Kawaguchi, Hitoshi ; Sukhoivanov, I.A. ; Katayama, T.
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A numerical model for the investigation of the ultrafast gain properties in asymmetrical multiple quantum-well semiconductor optical amplifiers has been developed considering propagation of ultrashort optical pulses with different wavelengths. The dynamics of the number of carriers and carrier temperature are investigated for each quantum well. The results agree with the experimental results of pump probe measurements with different wavelengths. It is shown that gain recovery is slower for higher energy wells for pump signals of all wavelengths.

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Quantum Electronics, IEEE Journal of  (Volume:41 ,  Issue: 6 )