Title :
Ultrafast gain dynamics in asymmetrical multiple quantum-well semiconductor optical amplifiers
Author :
Lysak, Vladimir V. ; Kawaguchi, Hitoshi ; Sukhoivanov, Igor A. ; Katayama, Takeo ; Shulika, Aleksey V.
Author_Institution :
Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., South Korea
fDate :
6/1/2005 12:00:00 AM
Abstract :
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.
Keywords :
optical pulse generation; quantum well lasers; semiconductor device models; semiconductor optical amplifiers; asymmetrical multiple quantum-well semiconductor optical amplifiers; gain recovery; ultrashort optical pulse propagation; Fiber nonlinear optics; Optical mixing; Optical modulation; Optical pumping; Optical wavelength conversion; Probes; Quantum well devices; Semiconductor optical amplifiers; Stimulated emission; Ultrafast optics; Gain recovery; modeling; optical propagation in nonlinear media; rate equation model; semiconductor optical amplifier;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2005.846694
