Nonlinear absorption temporal dynamics of Fe-doped GaInAs/InP multiple quantum wells

Autor:	Slimane Loualiche, A. Le Corre, Jacky Even, Alexandre Marceaux, Olivier Dehaese, M. Guézo, Y. Pellan
Rok vydání:	2003
Předmět:	Physics business.industry Exciton Doping Physics::Optics General Physics and Astronomy Electron Molecular physics Gallium arsenide Optical pumping Wavelength chemistry.chemical_compound chemistry Picosecond Optoelectronics business Quantum well
Zdroj:	Journal of Applied Physics. 94:2355-2359
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1591077
Popis:	GaInAs/InP multiple quantum wells (MQWs) are used as saturable absorbers for all-optical signal regeneration at a 1.55-μm wavelength. These MQWs are doped during their growth by molecular-beam epitaxy with Fe to improve their temporal response. The present work develops a theoretical description of the carrier recombination dynamics in these MQWs. Temporal evolution of the populations of excitons, holes, electrons, and iron traps is determined by coupled evolution equations. The model describes the optical temporal nonlinearity of the saturable absorbers near the excitonic peak transition. Furthermore, pump-probe experiments have been performed to measure the recovery time of these structures having different Fe doping concentrations. A good agreement between the experimental measurements and the model predictions of the optical temporal behaviors of the saturable absorbers is obtained. The control of the recovery time (nanoseconds to picoseconds) with the Fe traps in a large concentration range (1015 to ...
Databáze:	OpenAIRE
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