title: Controllable delay of ultrashort pulses in a quantum dot optical amplifier.
abstract: 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.
authors.forename: Mike
authors.initials: M
authors.lastname: van der Poel
authors.forename: Jesper
authors.initials: J
authors.lastname: Mørk
authors.forename: Jørn
authors.initials: J
authors.lastname: Hvam