title: Strong optical injection and the differential gain in a quantum dash laser.
abstract: By optically injecting a quantum dash laser and simultaneously producing a significant lowering of the device threshold, a large enhancement in the differential gain is realized. This effect is observed by way of a dramatic reduction in the linewidth enhancement factor and a large increase in the 3-dB modulation bandwidth, especially as the injection wavelength is blue-shifted. Compared to its free-running value, a 50X improvement in the laser's differential gain is found.
authors.forename: Luke F
authors.initials: LF
authors.lastname: Lester
authors.forename: Nader A
authors.initials: NA
authors.lastname: Naderi
authors.forename: Frederic
authors.initials: F
authors.lastname: Grillot
authors.forename: Ravi
authors.initials: R
authors.lastname: Raghunathan
authors.forename: Vassilios
authors.initials: V
authors.lastname: Kovanis