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Time-resolved electro-absorption is reported for the first time in a GaInNAs quantum well p-i-n waveguide at 1.3 mum. A recovery of 55 ps demonstrates the potential for optical modulator devices.
The first experimental measurement of electron spin relaxation in GaInNAs quantum wells is reported. An all-optical polarization switch based on the excitation of spin-polarized electrons is demonstrated.
Summary form only given. We present transient amplitude and spin grating measurements in room temperature InGaAsP multiple quantum wells (MQWs) for the first time using picosecond laser pulses at 1.525 microns. We deduce in-well diffusion coefficients and compare these with those previously reported for GaAs.
By monitoring the quantum confined Stark effect using sub-picosecond laser pulses, the authors time resolve the field dependence of the photoconductive impulse response of a GaAs/AlGaAs multiple quantum well pin modulator.<<ETX>>
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