Controllable delay of ultrashort pulses in a quantum dot optical amplifier.
Optical and electrical tuning of the propagation time of 170 fs pulses in a quantum dot semiconductor amplifier at room temperature is demonstrated. Both pulse slowdown and advancement is possible and we achieve fractional delays (delay divided with pulse duration) of up to 40%. The results are explained by a simple gain saturation model.
van der Poel
Mike
M
Mørk
Jesper
J
Hvam
Jørn
J