TITLE

High-speed 1.55 μm Fe-doped multiple-quantum-well saturable absorber on InP

AUTHOR(S)
Marceaux, A.; Loualiche, S.; Dehaese, O.; Lambert, B.
PUB. DATE
June 2001
SOURCE
Applied Physics Letters;6/25/2001, Vol. 78 Issue 26, p4065
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Excitonic saturable absorption on iron-doped InGaAs/InP multiple-quantum-well structures is studied by Fourier transform infrared spectroscopy and pump-probe measurement in the 1.55 μm wavelength range. The recovery time of the excitonic absorption bleaching is improved by iron doping and is found to vary from 7 ns on the undoped sample to 7 ps on the highest doped sample. The samples exhibit high optical switching with a differential optical transmission coefficient of more than 20% and a saturation fluence smaller than 47 μJ/cm2. Furthermore, we notice no degradation of the contrast ratio due to iron doping. © 2001 American Institute of Physics.
ACCESSION #
4711100

 

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